Finding the Fourth Proportional to 113,659.96, 156,859.29 and 65,912.89

Step by Step Solution

1. Step 1: Write the proportion equation
   113,659.96 : 156,859.29 = 65,912.89 : x
2. Step 2: Convert to fraction form
   113,659.96/156,859.29 = 65,912.89/x
3. Step 3: Cross multiply
   113,659.96x = 156,859.29 × 65,912.89
4. Step 4: Simplify right side
   113,659.96x = 10,339,049,127.25
5. Step 5: Solve for x
   x = 10,339,049,127.25/113,659.96
6. Step 6: Final answer
   x = 90,964.74