Finding the Fourth Proportional to 142.16, 196.23 and 109.37

Step by Step Solution

1. Step 1: Write the proportion equation
   142.16 : 196.23 = 109.37 : x
2. Step 2: Convert to fraction form
   142.16/196.23 = 109.37/x
3. Step 3: Cross multiply
   142.16x = 196.23 × 109.37
4. Step 4: Simplify right side
   142.16x = 21,460.15
5. Step 5: Solve for x
   x = 21,460.15/142.16
6. Step 6: Final answer
   x = 150.96