Finding the Fourth Proportional to 196.42, 294.74 and 142.76

Step by Step Solution

1. Step 1: Write the proportion equation
   196.42 : 294.74 = 142.76 : x
2. Step 2: Convert to fraction form
   196.42/294.74 = 142.76/x
3. Step 3: Cross multiply
   196.42x = 294.74 × 142.76
4. Step 4: Simplify right side
   196.42x = 42,076.00
5. Step 5: Solve for x
   x = 42,076.00/196.42
6. Step 6: Final answer
   x = 214.21