(Solving not using a spreadsheet)

Firms A, B, C, and D enter into a financial arrangement. Money flush firm A will pay expanding firms B and C each $1,000,000 today. B will pay D $2, 200,000 three years from today. C will pay B $800,000 two years from today and D $350,000 two years from today. Finally, D will pay A $3, 200,000 six years from today. Calculate the yield rate or interest rate, to the nearest hundredth of a percent, that each firm experiences over the period of their involvement (6 years for A, 3 years for B, 2 years for C, and 4 years for D)