Finding the Fourth Proportional to 114.27, 171.42 and 42.15

Step by Step Solution

1. Step 1: Write the proportion equation
   114.27 : 171.42 = 42.15 : x
2. Step 2: Convert to fraction form
   114.27/171.42 = 42.15/x
3. Step 3: Cross multiply
   114.27x = 171.42 × 42.15
4. Step 4: Simplify right side
   114.27x = 7,225.35
5. Step 5: Solve for x
   x = 7,225.35/114.27
6. Step 6: Final answer
   x = 63.23