Finding the Fourth Proportional to 113,154.64, 156,155.88 and 65,410

Step by Step Solution

1. Step 1: Write the proportion equation
   113,154.64 : 156,155.88 = 65,410 : x
2. Step 2: Convert to fraction form
   113,154.64/156,155.88 = 65,410/x
3. Step 3: Cross multiply
   113,154.64x = 156,155.88 × 65,410
4. Step 4: Simplify right side
   113,154.64x = 10,214,156,110.80
5. Step 5: Solve for x
   x = 10,214,156,110.80/113,154.64
6. Step 6: Final answer
   x = 90,267.23