Finding the Fourth Proportional to 42,144.36, 63,233.52 and 18,754.80

Step by Step Solution

1. Step 1: Write the proportion equation
   42,144.36 : 63,233.52 = 18,754.80 : x
2. Step 2: Convert to fraction form
   42,144.36/63,233.52 = 18,754.80/x
3. Step 3: Cross multiply
   42,144.36x = 63,233.52 × 18,754.80
4. Step 4: Simplify right side
   42,144.36x = 1,185,932,020.90
5. Step 5: Solve for x
   x = 1,185,932,020.90/42,144.36
6. Step 6: Final answer
   x = 28,139.76