Finding the Fourth Proportional to 72,059.62, 99,443.26 and 39,796.42

Step by Step Solution

1. Step 1: Write the proportion equation
   72,059.62 : 99,443.26 = 39,796.42 : x
2. Step 2: Convert to fraction form
   72,059.62/99,443.26 = 39,796.42/x
3. Step 3: Cross multiply
   72,059.62x = 99,443.26 × 39,796.42
4. Step 4: Simplify right side
   72,059.62x = 3,957,485,641.76
5. Step 5: Solve for x
   x = 3,957,485,641.76/72,059.62
6. Step 6: Final answer
   x = 54,919.60