Finding the Fourth Proportional to 74.75, 111.89 and 40.42

Step by Step Solution

1. Step 1: Write the proportion equation
   74.75 : 111.89 = 40.42 : x
2. Step 2: Convert to fraction form
   74.75/111.89 = 40.42/x
3. Step 3: Cross multiply
   74.75x = 111.89 × 40.42
4. Step 4: Simplify right side
   74.75x = 4,522.59
5. Step 5: Solve for x
   x = 4,522.59/74.75
6. Step 6: Final answer
   x = 60.50