Finding the Fourth Proportional to 131.83, 181.86 and 82.63

Step by Step Solution

1. Step 1: Write the proportion equation
   131.83 : 181.86 = 82.63 : x
2. Step 2: Convert to fraction form
   131.83/181.86 = 82.63/x
3. Step 3: Cross multiply
   131.83x = 181.86 × 82.63
4. Step 4: Simplify right side
   131.83x = 15,027.09
5. Step 5: Solve for x
   x = 15,027.09/131.83
6. Step 6: Final answer
   x = 113.99