Finding the Fourth Proportional to 72,630.10, 108,951.43 and 20,039.57

Step by Step Solution

1. Step 1: Write the proportion equation
   72,630.10 : 108,951.43 = 20,039.57 : x
2. Step 2: Convert to fraction form
   72,630.10/108,951.43 = 20,039.57/x
3. Step 3: Cross multiply
   72,630.10x = 108,951.43 × 20,039.57
4. Step 4: Simplify right side
   72,630.10x = 2,183,340,215.86
5. Step 5: Solve for x
   x = 2,183,340,215.86/72,630.10
6. Step 6: Final answer
   x = 30,061.10