Finding the Fourth Proportional to 90,516.16, 124,830.24 and 56,527.76

Step by Step Solution

1. Step 1: Write the proportion equation
   90,516.16 : 124,830.24 = 56,527.76 : x
2. Step 2: Convert to fraction form
   90,516.16/124,830.24 = 56,527.76/x
3. Step 3: Cross multiply
   90,516.16x = 124,830.24 × 56,527.76
4. Step 4: Simplify right side
   90,516.16x = 7,056,373,847.46
5. Step 5: Solve for x
   x = 7,056,373,847.46/90,516.16
6. Step 6: Final answer
   x = 77,957.06