Finding the Fourth Proportional to 196.69, 271.52 and 123.11

Step by Step Solution

1. Step 1: Write the proportion equation
   196.69 : 271.52 = 123.11 : x
2. Step 2: Convert to fraction form
   196.69/271.52 = 123.11/x
3. Step 3: Cross multiply
   196.69x = 271.52 × 123.11
4. Step 4: Simplify right side
   196.69x = 33,426.21
5. Step 5: Solve for x
   x = 33,426.21/196.69
6. Step 6: Final answer
   x = 169.95