share of c is 1/5 therefore remaining share of a and b is 4/5. Adjusted combined capital of a and b is 385000+415000 =8,00,000. Now, the total capital of new firm is 8,00,000 multiplied by 5/4 = 10,00,000. Proportionate capital of incoming partner is 1/5 multiplied by 10,00,000 = 2,00,000