Finding the Fourth Proportional to 142.32, 196.56 and 107.52

Step by Step Solution

1. Step 1: Write the proportion equation
   142.32 : 196.56 = 107.52 : x
2. Step 2: Convert to fraction form
   142.32/196.56 = 107.52/x
3. Step 3: Cross multiply
   142.32x = 196.56 × 107.52
4. Step 4: Simplify right side
   142.32x = 21,134.13
5. Step 5: Solve for x
   x = 21,134.13/142.32
6. Step 6: Final answer
   x = 148.50