Finding the Fourth Proportional to 42,363.72, 63,504.24 and 20,171.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,363.72 : 63,504.24 = 20,171.12 : x
2. Step 2: Convert to fraction form
   42,363.72/63,504.24 = 20,171.12/x
3. Step 3: Cross multiply
   42,363.72x = 63,504.24 × 20,171.12
4. Step 4: Simplify right side
   42,363.72x = 1,280,951,645.55
5. Step 5: Solve for x
   x = 1,280,951,645.55/42,363.72
6. Step 6: Final answer
   x = 30,237.00