Finding the Fourth Proportional to 113,520.76, 156,495 and 79,423.60

Step by Step Solution

1. Step 1: Write the proportion equation
   113,520.76 : 156,495 = 79,423.60 : x
2. Step 2: Convert to fraction form
   113,520.76/156,495 = 79,423.60/x
3. Step 3: Cross multiply
   113,520.76x = 156,495 × 79,423.60
4. Step 4: Simplify right side
   113,520.76x = 12,429,396,282
5. Step 5: Solve for x
   x = 12,429,396,282/113,520.76
6. Step 6: Final answer
   x = 109,490.07