Finding the Fourth Proportional to 72,713.97, 109,049.76 and 28,330.83

Step by Step Solution

1. Step 1: Write the proportion equation
   72,713.97 : 109,049.76 = 28,330.83 : x
2. Step 2: Convert to fraction form
   72,713.97/109,049.76 = 28,330.83/x
3. Step 3: Cross multiply
   72,713.97x = 109,049.76 × 28,330.83
4. Step 4: Simplify right side
   72,713.97x = 3,089,470,212.10
5. Step 5: Solve for x
   x = 3,089,470,212.10/72,713.97
6. Step 6: Final answer
   x = 42,487.99