Finding the Fourth Proportional to 114.42, 171.69 and 108.15

Step by Step Solution

1. Step 1: Write the proportion equation
   114.42 : 171.69 = 108.15 : x
2. Step 2: Convert to fraction form
   114.42/171.69 = 108.15/x
3. Step 3: Cross multiply
   114.42x = 171.69 × 108.15
4. Step 4: Simplify right side
   114.42x = 18,568.27
5. Step 5: Solve for x
   x = 18,568.27/114.42
6. Step 6: Final answer
   x = 162.28