Finding the Fourth Proportional to 131.94, 182.28 and 90.48

Step by Step Solution

1. Step 1: Write the proportion equation
   131.94 : 182.28 = 90.48 : x
2. Step 2: Convert to fraction form
   131.94/182.28 = 90.48/x
3. Step 3: Cross multiply
   131.94x = 182.28 × 90.48
4. Step 4: Simplify right side
   131.94x = 16,492.69
5. Step 5: Solve for x
   x = 16,492.69/131.94
6. Step 6: Final answer
   x = 125.00