Finding the Fourth Proportional to 72,648.92, 108,770.38 and 39,249.32

Step by Step Solution

1. Step 1: Write the proportion equation
   72,648.92 : 108,770.38 = 39,249.32 : x
2. Step 2: Convert to fraction form
   72,648.92/108,770.38 = 39,249.32/x
3. Step 3: Cross multiply
   72,648.92x = 108,770.38 × 39,249.32
4. Step 4: Simplify right side
   72,648.92x = 4,269,162,809.17
5. Step 5: Solve for x
   x = 4,269,162,809.17/72,648.92
6. Step 6: Final answer
   x = 58,764.30