Finding the Fourth Proportional to 142.02, 196.18 and 114.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142.02 : 196.18 = 114.50 : x
2. Step 2: Convert to fraction form
   142.02/196.18 = 114.50/x
3. Step 3: Cross multiply
   142.02x = 196.18 × 114.50
4. Step 4: Simplify right side
   142.02x = 22,462.61
5. Step 5: Solve for x
   x = 22,462.61/142.02
6. Step 6: Final answer
   x = 158.17