Finding the Fourth Proportional to 42,153.09, 63,233.88 and 12,168.09

Step by Step Solution

1. Step 1: Write the proportion equation
   42,153.09 : 63,233.88 = 12,168.09 : x
2. Step 2: Convert to fraction form
   42,153.09/63,233.88 = 12,168.09/x
3. Step 3: Cross multiply
   42,153.09x = 63,233.88 × 12,168.09
4. Step 4: Simplify right side
   42,153.09x = 769,435,542.89
5. Step 5: Solve for x
   x = 769,435,542.89/42,153.09
6. Step 6: Final answer
   x = 18,253.36