Finding the Fourth Proportional to 72,016.74, 99,384.39 and 39,755.16

Step by Step Solution

1. Step 1: Write the proportion equation
   72,016.74 : 99,384.39 = 39,755.16 : x
2. Step 2: Convert to fraction form
   72,016.74/99,384.39 = 39,755.16/x
3. Step 3: Cross multiply
   72,016.74x = 99,384.39 × 39,755.16
4. Step 4: Simplify right side
   72,016.74x = 3,951,042,325.95
5. Step 5: Solve for x
   x = 3,951,042,325.95/72,016.74
6. Step 6: Final answer
   x = 54,862.83