Finding the Fourth Proportional to 42,105.86, 63,140.31 and 15,792.15

Step by Step Solution

1. Step 1: Write the proportion equation
   42,105.86 : 63,140.31 = 15,792.15 : x
2. Step 2: Convert to fraction form
   42,105.86/63,140.31 = 15,792.15/x
3. Step 3: Cross multiply
   42,105.86x = 63,140.31 × 15,792.15
4. Step 4: Simplify right side
   42,105.86x = 997,121,246.57
5. Step 5: Solve for x
   x = 997,121,246.57/42,105.86
6. Step 6: Final answer
   x = 23,681.29