Finding the Fourth Proportional to 72,162.02, 99,584.25 and 39,896.17

Step by Step Solution

1. Step 1: Write the proportion equation
   72,162.02 : 99,584.25 = 39,896.17 : x
2. Step 2: Convert to fraction form
   72,162.02/99,584.25 = 39,896.17/x
3. Step 3: Cross multiply
   72,162.02x = 99,584.25 × 39,896.17
4. Step 4: Simplify right side
   72,162.02x = 3,973,030,167.32
5. Step 5: Solve for x
   x = 3,973,030,167.32/72,162.02
6. Step 6: Final answer
   x = 55,057.08