Finding the Fourth Proportional to 72,456.24, 108,715.64 and 39,199.73

Step by Step Solution

1. Step 1: Write the proportion equation
   72,456.24 : 108,715.64 = 39,199.73 : x
2. Step 2: Convert to fraction form
   72,456.24/108,715.64 = 39,199.73/x
3. Step 3: Cross multiply
   72,456.24x = 108,715.64 × 39,199.73
4. Step 4: Simplify right side
   72,456.24x = 4,261,623,734.78
5. Step 5: Solve for x
   x = 4,261,623,734.78/72,456.24
6. Step 6: Final answer
   x = 58,816.52