Finding the Fourth Proportional to 142.34, 196.29 and 109.53

Step by Step Solution

1. Step 1: Write the proportion equation
   142.34 : 196.29 = 109.53 : x
2. Step 2: Convert to fraction form
   142.34/196.29 = 109.53/x
3. Step 3: Cross multiply
   142.34x = 196.29 × 109.53
4. Step 4: Simplify right side
   142.34x = 21,499.64
5. Step 5: Solve for x
   x = 21,499.64/142.34
6. Step 6: Final answer
   x = 151.05