Finding the Fourth Proportional to 131.76, 196.56 and 123.48

Step by Step Solution

1. Step 1: Write the proportion equation
   131.76 : 196.56 = 123.48 : x
2. Step 2: Convert to fraction form
   131.76/196.56 = 123.48/x
3. Step 3: Cross multiply
   131.76x = 196.56 × 123.48
4. Step 4: Simplify right side
   131.76x = 24,271.23
5. Step 5: Solve for x
   x = 24,271.23/131.76
6. Step 6: Final answer
   x = 184.21