Finding the Fourth Proportional to 72,412.76, 99,932.46 and 40,581.38

Step by Step Solution

1. Step 1: Write the proportion equation
   72,412.76 : 99,932.46 = 40,581.38 : x
2. Step 2: Convert to fraction form
   72,412.76/99,932.46 = 40,581.38/x
3. Step 3: Cross multiply
   72,412.76x = 99,932.46 × 40,581.38
4. Step 4: Simplify right side
   72,412.76x = 4,055,397,133.59
5. Step 5: Solve for x
   x = 4,055,397,133.59/72,412.76
6. Step 6: Final answer
   x = 56,003.90