Finding the Fourth Proportional to 113,141.70, 156,118.20 and 65,385.83

Step by Step Solution

1. Step 1: Write the proportion equation
   113,141.70 : 156,118.20 = 65,385.83 : x
2. Step 2: Convert to fraction form
   113,141.70/156,118.20 = 65,385.83/x
3. Step 3: Cross multiply
   113,141.70x = 156,118.20 × 65,385.83
4. Step 4: Simplify right side
   113,141.70x = 10,207,917,889.96
5. Step 5: Solve for x
   x = 10,207,917,889.96/113,141.70
6. Step 6: Final answer
   x = 90,222.42