Finding the Fourth Proportional to 131.71, 196.54 and 123.91

Step by Step Solution

1. Step 1: Write the proportion equation
   131.71 : 196.54 = 123.91 : x
2. Step 2: Convert to fraction form
   131.71/196.54 = 123.91/x
3. Step 3: Cross multiply
   131.71x = 196.54 × 123.91
4. Step 4: Simplify right side
   131.71x = 24,353.27
5. Step 5: Solve for x
   x = 24,353.27/131.71
6. Step 6: Final answer
   x = 184.90