Finding the Fourth Proportional to 114.42, 171.59 and 42.30

Step by Step Solution

1. Step 1: Write the proportion equation
   114.42 : 171.59 = 42.30 : x
2. Step 2: Convert to fraction form
   114.42/171.59 = 42.30/x
3. Step 3: Cross multiply
   114.42x = 171.59 × 42.30
4. Step 4: Simplify right side
   114.42x = 7,258.05
5. Step 5: Solve for x
   x = 7,258.05/114.42
6. Step 6: Final answer
   x = 63.43