Finding the Fourth Proportional to 113,732.76, 156,979.98 and 65,980.02

Step by Step Solution

1. Step 1: Write the proportion equation
   113,732.76 : 156,979.98 = 65,980.02 : x
2. Step 2: Convert to fraction form
   113,732.76/156,979.98 = 65,980.02/x
3. Step 3: Cross multiply
   113,732.76x = 156,979.98 × 65,980.02
4. Step 4: Simplify right side
   113,732.76x = 10,357,542,220.00
5. Step 5: Solve for x
   x = 10,357,542,220.00/113,732.76
6. Step 6: Final answer
   x = 91,069.12