Finding the Fourth Proportional to 113,154.72, 156,136.17 and 65,398.86

Step by Step Solution

1. Step 1: Write the proportion equation
   113,154.72 : 156,136.17 = 65,398.86 : x
2. Step 2: Convert to fraction form
   113,154.72/156,136.17 = 65,398.86/x
3. Step 3: Cross multiply
   113,154.72x = 156,136.17 × 65,398.86
4. Step 4: Simplify right side
   113,154.72x = 10,211,127,522.77
5. Step 5: Solve for x
   x = 10,211,127,522.77/113,154.72
6. Step 6: Final answer
   x = 90,240.40