Finding the Fourth Proportional to 196.99, 271.89 and 114.15

Step by Step Solution

1. Step 1: Write the proportion equation
   196.99 : 271.89 = 114.15 : x
2. Step 2: Convert to fraction form
   196.99/271.89 = 114.15/x
3. Step 3: Cross multiply
   196.99x = 271.89 × 114.15
4. Step 4: Simplify right side
   196.99x = 31,035.73
5. Step 5: Solve for x
   x = 31,035.73/196.99
6. Step 6: Final answer
   x = 157.55