Finding the Fourth Proportional to 114.29, 171.47 and 42.15

Step by Step Solution

1. Step 1: Write the proportion equation
   114.29 : 171.47 = 42.15 : x
2. Step 2: Convert to fraction form
   114.29/171.47 = 42.15/x
3. Step 3: Cross multiply
   114.29x = 171.47 × 42.15
4. Step 4: Simplify right side
   114.29x = 7,228.21
5. Step 5: Solve for x
   x = 7,228.21/114.29
6. Step 6: Final answer
   x = 63.25