Finding the Fourth Proportional to 72,068.39, 99,454.56 and 40,238.43

Step by Step Solution

1. Step 1: Write the proportion equation
   72,068.39 : 99,454.56 = 40,238.43 : x
2. Step 2: Convert to fraction form
   72,068.39/99,454.56 = 40,238.43/x
3. Step 3: Cross multiply
   72,068.39x = 99,454.56 × 40,238.43
4. Step 4: Simplify right side
   72,068.39x = 4,001,895,350.74
5. Step 5: Solve for x
   x = 4,001,895,350.74/72,068.39
6. Step 6: Final answer
   x = 55,529.13