Finding the Fourth Proportional to 42,147.16, 63,223.98 and 15,851.32

Step by Step Solution

1. Step 1: Write the proportion equation
   42,147.16 : 63,223.98 = 15,851.32 : x
2. Step 2: Convert to fraction form
   42,147.16/63,223.98 = 15,851.32/x
3. Step 3: Cross multiply
   42,147.16x = 63,223.98 × 15,851.32
4. Step 4: Simplify right side
   42,147.16x = 1,002,183,538.65
5. Step 5: Solve for x
   x = 1,002,183,538.65/42,147.16
6. Step 6: Final answer
   x = 23,778.20