Finding the Fourth Proportional to 72,229.56, 99,682.01 and 40,408.71

Step by Step Solution

1. Step 1: Write the proportion equation
   72,229.56 : 99,682.01 = 40,408.71 : x
2. Step 2: Convert to fraction form
   72,229.56/99,682.01 = 40,408.71/x
3. Step 3: Cross multiply
   72,229.56x = 99,682.01 × 40,408.71
4. Step 4: Simplify right side
   72,229.56x = 4,028,021,434.31
5. Step 5: Solve for x
   x = 4,028,021,434.31/72,229.56
6. Step 6: Final answer
   x = 55,766.94