Finding the Fourth Proportional to 142.52, 196.88 and 111.52

Step by Step Solution

1. Step 1: Write the proportion equation
   142.52 : 196.88 = 111.52 : x
2. Step 2: Convert to fraction form
   142.52/196.88 = 111.52/x
3. Step 3: Cross multiply
   142.52x = 196.88 × 111.52
4. Step 4: Simplify right side
   142.52x = 21,956.06
5. Step 5: Solve for x
   x = 21,956.06/142.52
6. Step 6: Final answer
   x = 154.06