Finding the Fourth Proportional to 72,059.50, 99,443.09 and 39,796.29

Step by Step Solution

1. Step 1: Write the proportion equation
   72,059.50 : 99,443.09 = 39,796.29 : x
2. Step 2: Convert to fraction form
   72,059.50/99,443.09 = 39,796.29/x
3. Step 3: Cross multiply
   72,059.50x = 99,443.09 × 39,796.29
4. Step 4: Simplify right side
   72,059.50x = 3,957,466,259.46
5. Step 5: Solve for x
   x = 3,957,466,259.46/72,059.50
6. Step 6: Final answer
   x = 54,919.43