Finding the Fourth Proportional to 42,146.92, 63,222.80 and 15,851.88

Step by Step Solution

1. Step 1: Write the proportion equation
   42,146.92 : 63,222.80 = 15,851.88 : x
2. Step 2: Convert to fraction form
   42,146.92/63,222.80 = 15,851.88/x
3. Step 3: Cross multiply
   42,146.92x = 63,222.80 × 15,851.88
4. Step 4: Simplify right side
   42,146.92x = 1,002,200,238.86
5. Step 5: Solve for x
   x = 1,002,200,238.86/42,146.92
6. Step 6: Final answer
   x = 23,778.73