Finding the Fourth Proportional to 71,078.96, 106,452.60 and 56,187.92

Step by Step Solution

1. Step 1: Write the proportion equation
   71,078.96 : 106,452.60 = 56,187.92 : x
2. Step 2: Convert to fraction form
   71,078.96/106,452.60 = 56,187.92/x
3. Step 3: Cross multiply
   71,078.96x = 106,452.60 × 56,187.92
4. Step 4: Simplify right side
   71,078.96x = 5,981,350,172.59
5. Step 5: Solve for x
   x = 5,981,350,172.59/71,078.96
6. Step 6: Final answer
   x = 84,150.78