Finding the Fourth Proportional to 72,468.55, 108,700.35 and 28,104.85

Step by Step Solution

1. Step 1: Write the proportion equation
   72,468.55 : 108,700.35 = 28,104.85 : x
2. Step 2: Convert to fraction form
   72,468.55/108,700.35 = 28,104.85/x
3. Step 3: Cross multiply
   72,468.55x = 108,700.35 × 28,104.85
4. Step 4: Simplify right side
   72,468.55x = 3,055,007,031.70
5. Step 5: Solve for x
   x = 3,055,007,031.70/72,468.55
6. Step 6: Final answer
   x = 42,156.32