Finding the Fourth Proportional to 72,445.29, 99,976.59 and 40,614.72

Step by Step Solution

1. Step 1: Write the proportion equation
   72,445.29 : 99,976.59 = 40,614.72 : x
2. Step 2: Convert to fraction form
   72,445.29/99,976.59 = 40,614.72/x
3. Step 3: Cross multiply
   72,445.29x = 99,976.59 × 40,614.72
4. Step 4: Simplify right side
   72,445.29x = 4,060,521,209.40
5. Step 5: Solve for x
   x = 4,060,521,209.40/72,445.29
6. Step 6: Final answer
   x = 56,049.49