Finding the Fourth Proportional to 142.67, 196.83 and 93.55

Step by Step Solution

1. Step 1: Write the proportion equation
   142.67 : 196.83 = 93.55 : x
2. Step 2: Convert to fraction form
   142.67/196.83 = 93.55/x
3. Step 3: Cross multiply
   142.67x = 196.83 × 93.55
4. Step 4: Simplify right side
   142.67x = 18,412.49
5. Step 5: Solve for x
   x = 18,412.49/142.67
6. Step 6: Final answer
   x = 129.05