Merge three Excel files (annual budgets) so they can be easily compared. These use similar, not exact General ledger numbers

I am looking for someone to merge three Excel files (annual budgets) so they can be easily compared. The files are in .xlsx format. The merged file can either keep the original format or be reformatted, whichever is easier for you. However, I would like the General Ledger numbers to be sorted in the merged file. Please let me know if you have any experience with merging Excel files and sorting data.