Finding the Fourth Proportional to 113,510.70, 156,620.88 and 65,761.20

Step by Step Solution

1. Step 1: Write the proportion equation
   113,510.70 : 156,620.88 = 65,761.20 : x
2. Step 2: Convert to fraction form
   113,510.70/156,620.88 = 65,761.20/x
3. Step 3: Cross multiply
   113,510.70x = 156,620.88 × 65,761.20
4. Step 4: Simplify right side
   113,510.70x = 10,299,577,013.86
5. Step 5: Solve for x
   x = 10,299,577,013.86/113,510.70
6. Step 6: Final answer
   x = 90,736.62