Finding the Fourth Proportional to 72,630.15, 108,942.25 and 20,038.29

Step by Step Solution

1. Step 1: Write the proportion equation
   72,630.15 : 108,942.25 = 20,038.29 : x
2. Step 2: Convert to fraction form
   72,630.15/108,942.25 = 20,038.29/x
3. Step 3: Cross multiply
   72,630.15x = 108,942.25 × 20,038.29
4. Step 4: Simplify right side
   72,630.15x = 2,183,016,398.75
5. Step 5: Solve for x
   x = 2,183,016,398.75/72,630.15
6. Step 6: Final answer
   x = 30,056.61