Finding the Fourth Proportional to 114.47, 171.72 and 42.38

Step by Step Solution

1. Step 1: Write the proportion equation
   114.47 : 171.72 = 42.38 : x
2. Step 2: Convert to fraction form
   114.47/171.72 = 42.38/x
3. Step 3: Cross multiply
   114.47x = 171.72 × 42.38
4. Step 4: Simplify right side
   114.47x = 7,277.49
5. Step 5: Solve for x
   x = 7,277.49/114.47
6. Step 6: Final answer
   x = 63.58