A 3n year annuity immediate is split between three charities A, B and C. A receives the first n payments, B receives the second n payments, and C receives the third n payments. The payments are level at X each year. If the annual effective interest rate is 3.14159%, then the proportion of the present value held by C is 0.264 290 252. Find the proportion of the present value held by B if the annual effective interest rate is 8%.