Finding the Fourth Proportional to 196.98, 271.86 and 123.24

Step by Step Solution

1. Step 1: Write the proportion equation
   196.98 : 271.86 = 123.24 : x
2. Step 2: Convert to fraction form
   196.98/271.86 = 123.24/x
3. Step 3: Cross multiply
   196.98x = 271.86 × 123.24
4. Step 4: Simplify right side
   196.98x = 33,504.03
5. Step 5: Solve for x
   x = 33,504.03/196.98
6. Step 6: Final answer
   x = 170.09