Finding the Fourth Proportional to 72,387.15, 108,603.15 and 32,439.79

Step by Step Solution

1. Step 1: Write the proportion equation
   72,387.15 : 108,603.15 = 32,439.79 : x
2. Step 2: Convert to fraction form
   72,387.15/108,603.15 = 32,439.79/x
3. Step 3: Cross multiply
   72,387.15x = 108,603.15 × 32,439.79
4. Step 4: Simplify right side
   72,387.15x = 3,523,063,379.34
5. Step 5: Solve for x
   x = 3,523,063,379.34/72,387.15
6. Step 6: Final answer
   x = 48,669.73