Tri-proportional Method example problem

Heres a link to the document for the Tri-proportional method problem.

http://docs.google.com/fileview?id=0B-HnV83xISMvY2MwMTg3M2UtYTE4Mi00MGY2LTlmZTUtNGM0Mzc5MTdiMDQx&hl=en