I have 64 bit SAS 9.4 installed and 32 bit Office 2007. When I had 32 bit SAS 9.3 installed, I was able to use a libname statement where the Excel file was the library and
If you can install SAS PC Files Server, you can still do this with the PCFILES destination. Installing the PC Files Server software is out of the scope of an answer here, but google about for instructions, they are readily available. You can install the PC Files Server on your desktop, or on a central server if that's more convenient for your workplace.
Once you have it installed, you just access it by:
libname mylib pcfiles path="blah\blah\blah.xlsx";
Just like you did before, but with a different dbms type.