Finding the Fourth Proportional to 113,131.55, 156,086.42 and 65,367.47

Step by Step Solution

1. Step 1: Write the proportion equation
   113,131.55 : 156,086.42 = 65,367.47 : x
2. Step 2: Convert to fraction form
   113,131.55/156,086.42 = 65,367.47/x
3. Step 3: Cross multiply
   113,131.55x = 156,086.42 × 65,367.47
4. Step 4: Simplify right side
   113,131.55x = 10,202,973,269.49
5. Step 5: Solve for x
   x = 10,202,973,269.49/113,131.55
6. Step 6: Final answer
   x = 90,186.81