Finding the Fourth Proportional to 123,844.96, 170,909.40 and 72,861.04

Step by Step Solution

1. Step 1: Write the proportion equation
   123,844.96 : 170,909.40 = 72,861.04 : x
2. Step 2: Convert to fraction form
   123,844.96/170,909.40 = 72,861.04/x
3. Step 3: Cross multiply
   123,844.96x = 170,909.40 × 72,861.04
4. Step 4: Simplify right side
   123,844.96x = 12,452,636,629.78
5. Step 5: Solve for x
   x = 12,452,636,629.78/123,844.96
6. Step 6: Final answer
   x = 100,550.21