Finding the Fourth Proportional to 196.86, 271.57 and 123.22

Step by Step Solution

1. Step 1: Write the proportion equation
   196.86 : 271.57 = 123.22 : x
2. Step 2: Convert to fraction form
   196.86/271.57 = 123.22/x
3. Step 3: Cross multiply
   196.86x = 271.57 × 123.22
4. Step 4: Simplify right side
   196.86x = 33,462.86
5. Step 5: Solve for x
   x = 33,462.86/196.86
6. Step 6: Final answer
   x = 169.98