Finding the Fourth Proportional to 142.24, 196.06 and 111.10

Step by Step Solution

1. Step 1: Write the proportion equation
   142.24 : 196.06 = 111.10 : x
2. Step 2: Convert to fraction form
   142.24/196.06 = 111.10/x
3. Step 3: Cross multiply
   142.24x = 196.06 × 111.10
4. Step 4: Simplify right side
   142.24x = 21,782.65
5. Step 5: Solve for x
   x = 21,782.65/142.24
6. Step 6: Final answer
   x = 153.14