Finding the Fourth Proportional to 113,658.56, 156,837.84 and 65,915

Step by Step Solution

1. Step 1: Write the proportion equation
   113,658.56 : 156,837.84 = 65,915 : x
2. Step 2: Convert to fraction form
   113,658.56/156,837.84 = 65,915/x
3. Step 3: Cross multiply
   113,658.56x = 156,837.84 × 65,915
4. Step 4: Simplify right side
   113,658.56x = 10,337,966,223.60
5. Step 5: Solve for x
   x = 10,337,966,223.60/113,658.56
6. Step 6: Final answer
   x = 90,956.34