Finding the Fourth Proportional to 57,715.30, 81,034.70 and 57,715.30

Step by Step Solution

1. Step 1: Write the proportion equation
   57,715.30 : 81,034.70 = 57,715.30 : x
2. Step 2: Convert to fraction form
   57,715.30/81,034.70 = 57,715.30/x
3. Step 3: Cross multiply
   57,715.30x = 81,034.70 × 57,715.30
4. Step 4: Simplify right side
   57,715.30x = 4,676,942,020.91
5. Step 5: Solve for x
   x = 4,676,942,020.91/57,715.30
6. Step 6: Final answer
   x = 81,034.70