Finding the Fourth Proportional to 42,360.20, 63,498.99 and 20,167.61

Step by Step Solution

1. Step 1: Write the proportion equation
   42,360.20 : 63,498.99 = 20,167.61 : x
2. Step 2: Convert to fraction form
   42,360.20/63,498.99 = 20,167.61/x
3. Step 3: Cross multiply
   42,360.20x = 63,498.99 × 20,167.61
4. Step 4: Simplify right side
   42,360.20x = 1,280,622,865.71
5. Step 5: Solve for x
   x = 1,280,622,865.71/42,360.20
6. Step 6: Final answer
   x = 30,231.75