Finding the Fourth Proportional to 114.50, 171.71 and 42.31

Step by Step Solution

1. Step 1: Write the proportion equation
   114.50 : 171.71 = 42.31 : x
2. Step 2: Convert to fraction form
   114.50/171.71 = 42.31/x
3. Step 3: Cross multiply
   114.50x = 171.71 × 42.31
4. Step 4: Simplify right side
   114.50x = 7,264.84
5. Step 5: Solve for x
   x = 7,264.84/114.50
6. Step 6: Final answer
   x = 63.45