Finding the Fourth Proportional to 196.29, 270.82 and 121.59

Step by Step Solution

1. Step 1: Write the proportion equation
   196.29 : 270.82 = 121.59 : x
2. Step 2: Convert to fraction form
   196.29/270.82 = 121.59/x
3. Step 3: Cross multiply
   196.29x = 270.82 × 121.59
4. Step 4: Simplify right side
   196.29x = 32,929.00
5. Step 5: Solve for x
   x = 32,929.00/196.29
6. Step 6: Final answer
   x = 167.76