Finding the Fourth Proportional to 42,426.47, 63,647.89 and 16,129.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42,426.47 : 63,647.89 = 16,129.16 : x
2. Step 2: Convert to fraction form
   42,426.47/63,647.89 = 16,129.16/x
3. Step 3: Cross multiply
   42,426.47x = 63,647.89 × 16,129.16
4. Step 4: Simplify right side
   42,426.47x = 1,026,587,061.41
5. Step 5: Solve for x
   x = 1,026,587,061.41/42,426.47
6. Step 6: Final answer
   x = 24,196.85