Finding the Fourth Proportional to 142.48, 196.43 and 109.33

Step by Step Solution

1. Step 1: Write the proportion equation
   142.48 : 196.43 = 109.33 : x
2. Step 2: Convert to fraction form
   142.48/196.43 = 109.33/x
3. Step 3: Cross multiply
   142.48x = 196.43 × 109.33
4. Step 4: Simplify right side
   142.48x = 21,475.76
5. Step 5: Solve for x
   x = 21,475.76/142.48
6. Step 6: Final answer
   x = 150.73