Finding the Fourth Proportional to 113,503.72, 156,592.50 and 65,739.64

Step by Step Solution

1. Step 1: Write the proportion equation
   113,503.72 : 156,592.50 = 65,739.64 : x
2. Step 2: Convert to fraction form
   113,503.72/156,592.50 = 65,739.64/x
3. Step 3: Cross multiply
   113,503.72x = 156,592.50 × 65,739.64
4. Step 4: Simplify right side
   113,503.72x = 10,294,334,576.70
5. Step 5: Solve for x
   x = 10,294,334,576.70/113,503.72
6. Step 6: Final answer
   x = 90,696.01