Finding the Fourth Proportional to 113,732.76, 156,980.04 and 65,980.08

Step by Step Solution

1. Step 1: Write the proportion equation
   113,732.76 : 156,980.04 = 65,980.08 : x
2. Step 2: Convert to fraction form
   113,732.76/156,980.04 = 65,980.08/x
3. Step 3: Cross multiply
   113,732.76x = 156,980.04 × 65,980.08
4. Step 4: Simplify right side
   113,732.76x = 10,357,555,597.60
5. Step 5: Solve for x
   x = 10,357,555,597.60/113,732.76
6. Step 6: Final answer
   x = 91,069.24