Finding the Fourth Proportional to 102,477.38, 141,419.61 and 57,153.86

Step by Step Solution

1. Step 1: Write the proportion equation
   102,477.38 : 141,419.61 = 57,153.86 : x
2. Step 2: Convert to fraction form
   102,477.38/141,419.61 = 57,153.86/x
3. Step 3: Cross multiply
   102,477.38x = 141,419.61 × 57,153.86
4. Step 4: Simplify right side
   102,477.38x = 8,082,676,591.19
5. Step 5: Solve for x
   x = 8,082,676,591.19/102,477.38
6. Step 6: Final answer
   x = 78,872.79