Finding the Fourth Proportional to 113,425.83, 156,536.69 and 65,680.02

Step by Step Solution

1. Step 1: Write the proportion equation
   113,425.83 : 156,536.69 = 65,680.02 : x
2. Step 2: Convert to fraction form
   113,425.83/156,536.69 = 65,680.02/x
3. Step 3: Cross multiply
   113,425.83x = 156,536.69 × 65,680.02
4. Step 4: Simplify right side
   113,425.83x = 10,281,332,601.53
5. Step 5: Solve for x
   x = 10,281,332,601.53/113,425.83
6. Step 6: Final answer
   x = 90,643.66