The TM Match Target add-in analyzes a list of numbers and finds combinations that sum to a given total. This has applications in a range of disciplines including processing receipts, reconciling payments such as health care insurance reimbursements or payments by a customer for many outstanding invoices, operations management and operations research, and supply change management.
There are a number of posts, easily found through Google or Bing, that address the same issue, including my own Find a set of amounts that match a target value. This add-in packages the analysis in an easy-to-use interface, includes a means to stop the analysis if it is taking too long and preserve the combinations found so far, together with various options on what results should be shown.
For more please visit http://www.tushar-mehta.com/excel/software/match_target/.