Finding the Fourth Proportional to 131.76, 196.83 and 125.10

Step by Step Solution

1. Step 1: Write the proportion equation
   131.76 : 196.83 = 125.10 : x
2. Step 2: Convert to fraction form
   131.76/196.83 = 125.10/x
3. Step 3: Cross multiply
   131.76x = 196.83 × 125.10
4. Step 4: Simplify right side
   131.76x = 24,623.43
5. Step 5: Solve for x
   x = 24,623.43/131.76
6. Step 6: Final answer
   x = 186.88