Finding the Fourth Proportional to 102,554,142.85, 141,526,404.53 and 56,143,631.17

Step by Step Solution

1. Step 1: Write the proportion equation
   102,554,142.85 : 141,526,404.53 = 56,143,631.17 : x
2. Step 2: Convert to fraction form
   102,554,142.85/141,526,404.53 = 56,143,631.17/x
3. Step 3: Cross multiply
   102,554,142.85x = 141,526,404.53 × 56,143,631.17
4. Step 4: Simplify right side
   102,554,142.85x = 7,945,806,256,748,538
5. Step 5: Solve for x
   x = 7,945,806,256,748,538/102,554,142.85
6. Step 6: Final answer
   x = 77,479,134.79