Finding the Fourth Proportional to 131.88, 182.10 and 90.52

Step by Step Solution

1. Step 1: Write the proportion equation
   131.88 : 182.10 = 90.52 : x
2. Step 2: Convert to fraction form
   131.88/182.10 = 90.52/x
3. Step 3: Cross multiply
   131.88x = 182.10 × 90.52
4. Step 4: Simplify right side
   131.88x = 16,483.69
5. Step 5: Solve for x
   x = 16,483.69/131.88
6. Step 6: Final answer
   x = 124.99