Finding the Fourth Proportional to 142.42, 196.52 and 93.29

Step by Step Solution

1. Step 1: Write the proportion equation
   142.42 : 196.52 = 93.29 : x
2. Step 2: Convert to fraction form
   142.42/196.52 = 93.29/x
3. Step 3: Cross multiply
   142.42x = 196.52 × 93.29
4. Step 4: Simplify right side
   142.42x = 18,332.64
5. Step 5: Solve for x
   x = 18,332.64/142.42
6. Step 6: Final answer
   x = 128.72