Wildcard for Vlookup command

I guess I need better clarification for what you ultimately want to accomplish.  You can use a wildcard in the Vlookup function.  i.e. something like this:

=VLOOKUP("*" & A10 &"*",A2:A5,1,FALSE)

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However, wildcards only work on text arrays.  Also, the look up array (in your instance the Murex table) must be sorted.

The data on the spreadsheet does not match your questions.  You ask about looking up 545488.28 in the list of "60500.28, 214875.28, 112930.28, 59295.28, 323976.28, 443444.28, 545488.28."  However, what your sheet is trying to do is look up the value of "60500.28, 214875.28, 112930.28, 59295.28, 323976.28, 443444.28, 545488.28" in the list of Murex.  Because that list of Murex is all individual values, it will never find a match.  

What are you really needing.  Are you wanting to see if 545488.28 in in the list of "60500.28, 214875.28, 112930.28, 59295.28, 323976.28, 443444.28, 545488.28".  If so then a simple find command could work.  For example:

=FIND(545488.28,I539)

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Or maybe you want to see if any value in the string "60500.28, 214875.28, 112930.28, 59295.28, 323976.28, 443444.28, 545488.28" is in the murex list?  This would most likely need to be done with VBA code.

Please provide some more details and we can see what can be done.

I wrote a user defined function that would split the first parameter in a VLOOKUP into multiple substrings by using the comma as a separator character. I then used Trim to get rid of leading and trailing spaces and used the worksheet VLOOKUP function. If it returned an error value, I then repeated the test with Val(substring). If an error value was returned, then repeat the test with the next substring.

In so doing, I could rewrite your formula like this:
=IFERROR(VlookupWild(I532,GBO,1,FALSE),VlookupWild(H532,Murex,1,FALSE))

Suppose cell I532 contains "60500.28, 214875.28, 112930.28, 59295.28, 323976.28, 443444.28, 545488.28".  The VlookupWild function would search GBO for 60500.28. If not successful, it would search for 214875.28. If not successful, then search for 112930.28 and so on. VlookupWild returns the first of these values that it finds in named range GBO. If none of these values were found, then VlookupWild returns the #N/A error value.

The code for function VlookupWild goes in a regular module sheet (just like a macro) and looks like this:

Function VlookupWild(LookupVal As Variant, lookupTable As Range, iColumn As Integer, bSorted As Boolean) As Variant
Dim v As Variant, vResult As Variant
vResult = Application.VLookup("abcde", lookupTable, iColumn, bSorted)   'Put an error value in vResult
If LookupVal <> "" Then
    For Each v In Split(LookupVal, ",")
        v = Application.Trim(v)
        vResult = Application.VLookup(v, lookupTable, iColumn, bSorted)
        If Not IsError(vResult) Then Exit For
        v = Val(v)
        If v <> 0 Then vResult = Application.VLookup(Val(v), lookupTable, iColumn, bSorted)
        If Not IsError(vResult) Then Exit For
    Next
End If
VlookupWild = vResult
End Function

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It is worth noting that the above formula and user-defined function return an error value on row 539. This is because ID number 545488.28 (last entry in I539) is found in named range Errors rather than GBO.

Note also that the function VlookupWild is found in the function wizard under "User defined functions" at the bottom of the category list.

Does the =Find function work like a Vlookup? What if I am looking for the value "112930.28"  in a cell "60500.28, 214875.28, 112930.28, 59295.28, 323976.28, 443444.28, 545488.28 and then I want to see what value is 2 cells to the right of that cell? eg, =find (112930.28,2,H:J,False)

I am still not completely sure what you want to accomplish, but you could use the Find function to check if a value is in a a cell and move over a couple columns.  Find returns an error if the value is not in the search text.  Therefore you could do something like this:

=IF(ISERROR(FIND(4807512,H539)),"NotFound",H541)

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This would return the value in cell H541 if the number 4807512 was found in cell H539.

-Bear