Finding the Fourth Proportional to 42.17, 57.42 and 42.04

Step by Step Solution

1. Step 1: Write the proportion equation
   42.17 : 57.42 = 42.04 : x
2. Step 2: Convert to fraction form
   42.17/57.42 = 42.04/x
3. Step 3: Cross multiply
   42.17x = 57.42 × 42.04
4. Step 4: Simplify right side
   42.17x = 2,413.79
5. Step 5: Solve for x
   x = 2,413.79/42.17
6. Step 6: Final answer
   x = 57.24