Finding the Fourth Proportional to 142.35, 196.59 and 114.81

Step by Step Solution

1. Step 1: Write the proportion equation
   142.35 : 196.59 = 114.81 : x
2. Step 2: Convert to fraction form
   142.35/196.59 = 114.81/x
3. Step 3: Cross multiply
   142.35x = 196.59 × 114.81
4. Step 4: Simplify right side
   142.35x = 22,570.50
5. Step 5: Solve for x
   x = 22,570.50/142.35
6. Step 6: Final answer
   x = 158.56