Finding the Fourth Proportional to 72,788.88, 108,957.32 and 39,426.08

Step by Step Solution

1. Step 1: Write the proportion equation
   72,788.88 : 108,957.32 = 39,426.08 : x
2. Step 2: Convert to fraction form
   72,788.88/108,957.32 = 39,426.08/x
3. Step 3: Cross multiply
   72,788.88x = 108,957.32 × 39,426.08
4. Step 4: Simplify right side
   72,788.88x = 4,295,760,014.91
5. Step 5: Solve for x
   x = 4,295,760,014.91/72,788.88
6. Step 6: Final answer
   x = 59,016.71