Finding the Fourth Proportional to 72,508.73, 108,742.05 and 30,387.71

Step by Step Solution

1. Step 1: Write the proportion equation
   72,508.73 : 108,742.05 = 30,387.71 : x
2. Step 2: Convert to fraction form
   72,508.73/108,742.05 = 30,387.71/x
3. Step 3: Cross multiply
   72,508.73x = 108,742.05 × 30,387.71
4. Step 4: Simplify right side
   72,508.73x = 3,304,421,336.50
5. Step 5: Solve for x
   x = 3,304,421,336.50/72,508.73
6. Step 6: Final answer
   x = 45,572.74