Finding the Fourth Proportional to 196.02, 294.12 and 144.72

Step by Step Solution

1. Step 1: Write the proportion equation
   196.02 : 294.12 = 144.72 : x
2. Step 2: Convert to fraction form
   196.02/294.12 = 144.72/x
3. Step 3: Cross multiply
   196.02x = 294.12 × 144.72
4. Step 4: Simplify right side
   196.02x = 42,565.05
5. Step 5: Solve for x
   x = 42,565.05/196.02
6. Step 6: Final answer
   x = 217.15