Finding the Fourth Proportional to 131.52, 181.61 and 82.49

Step by Step Solution

1. Step 1: Write the proportion equation
   131.52 : 181.61 = 82.49 : x
2. Step 2: Convert to fraction form
   131.52/181.61 = 82.49/x
3. Step 3: Cross multiply
   131.52x = 181.61 × 82.49
4. Step 4: Simplify right side
   131.52x = 14,979.69
5. Step 5: Solve for x
   x = 14,979.69/131.52
6. Step 6: Final answer
   x = 113.90