Finding the Fourth Proportional to 142.27, 196.33 and 92.48

Step by Step Solution

1. Step 1: Write the proportion equation
   142.27 : 196.33 = 92.48 : x
2. Step 2: Convert to fraction form
   142.27/196.33 = 92.48/x
3. Step 3: Cross multiply
   142.27x = 196.33 × 92.48
4. Step 4: Simplify right side
   142.27x = 18,156.86
5. Step 5: Solve for x
   x = 18,156.86/142.27
6. Step 6: Final answer
   x = 127.62