Finding the Fourth Proportional to 42,016.24, 57,963.52 and 28,399.92

Step by Step Solution

1. Step 1: Write the proportion equation
   42,016.24 : 57,963.52 = 28,399.92 : x
2. Step 2: Convert to fraction form
   42,016.24/57,963.52 = 28,399.92/x
3. Step 3: Cross multiply
   42,016.24x = 57,963.52 × 28,399.92
4. Step 4: Simplify right side
   42,016.24x = 1,646,159,330.92
5. Step 5: Solve for x
   x = 1,646,159,330.92/42,016.24
6. Step 6: Final answer
   x = 39,179.12