Finding the Fourth Proportional to 196.52, 294.30 and 142.76

Step by Step Solution

1. Step 1: Write the proportion equation
   196.52 : 294.30 = 142.76 : x
2. Step 2: Convert to fraction form
   196.52/294.30 = 142.76/x
3. Step 3: Cross multiply
   196.52x = 294.30 × 142.76
4. Step 4: Simplify right side
   196.52x = 42,014.27
5. Step 5: Solve for x
   x = 42,014.27/196.52
6. Step 6: Final answer
   x = 213.79