Finding the Fourth Proportional to 131.52, 196.83 and 90.82

Step by Step Solution

1. Step 1: Write the proportion equation
   131.52 : 196.83 = 90.82 : x
2. Step 2: Convert to fraction form
   131.52/196.83 = 90.82/x
3. Step 3: Cross multiply
   131.52x = 196.83 × 90.82
4. Step 4: Simplify right side
   131.52x = 17,876.35
5. Step 5: Solve for x
   x = 17,876.35/131.52
6. Step 6: Final answer
   x = 135.92