Finding the Fourth Proportional to 113,713.20, 156,931.56 and 65,982.60

Step by Step Solution

1. Step 1: Write the proportion equation
   113,713.20 : 156,931.56 = 65,982.60 : x
2. Step 2: Convert to fraction form
   113,713.20/156,931.56 = 65,982.60/x
3. Step 3: Cross multiply
   113,713.20x = 156,931.56 × 65,982.60
4. Step 4: Simplify right side
   113,713.20x = 10,354,752,350.86
5. Step 5: Solve for x
   x = 10,354,752,350.86/113,713.20
6. Step 6: Final answer
   x = 91,060.25