How are Starbucks cappuccino beans sourced?

Starbucks says it buys its coffee as Arabica through its Coffee and Farmer Equity (C.A.F.E.) Practices program, and that most of it comes from farms in Latin America, Africa and Asia, with some from farmers in other regions. Starbucks buys green coffee directly from farmers and cooperatives and through exporters and importers, and it pays a premium above the commodity price for coffee that meets its quality and sustainability criteria. I haven't checked the current figures in this answer, so the exact share of each origin, and whether the C.A.F.E. program has changed recently, is worth confirming on Starbucks' own sourcing pages.

The cappuccino blend itself is a different question. Starbucks sells espresso roasts built from several origins, and the company doesn't publish a single farm or country for each drink. If you want the specific origins behind a particular espresso roast, the packaging or Starbucks' coffee pages list them.