Finding the Fourth Proportional to 329.58, 454.83 and 196.79

Step by Step Solution

1. Step 1: Write the proportion equation
   329.58 : 454.83 = 196.79 : x
2. Step 2: Convert to fraction form
   329.58/454.83 = 196.79/x
3. Step 3: Cross multiply
   329.58x = 454.83 × 196.79
4. Step 4: Simplify right side
   329.58x = 89,506.39
5. Step 5: Solve for x
   x = 89,506.39/329.58
6. Step 6: Final answer
   x = 271.58