Finding the Fourth Proportional to 72,456.74, 108,716.39 and 39,200.23

Step by Step Solution

1. Step 1: Write the proportion equation
   72,456.74 : 108,716.39 = 39,200.23 : x
2. Step 2: Convert to fraction form
   72,456.74/108,716.39 = 39,200.23/x
3. Step 3: Cross multiply
   72,456.74x = 108,716.39 × 39,200.23
4. Step 4: Simplify right side
   72,456.74x = 4,261,707,492.77
5. Step 5: Solve for x
   x = 4,261,707,492.77/72,456.74
6. Step 6: Final answer
   x = 58,817.27