Finding the Fourth Proportional to 131.89, 182.01 and 76.63

Step by Step Solution

1. Step 1: Write the proportion equation
   131.89 : 182.01 = 76.63 : x
2. Step 2: Convert to fraction form
   131.89/182.01 = 76.63/x
3. Step 3: Cross multiply
   131.89x = 182.01 × 76.63
4. Step 4: Simplify right side
   131.89x = 13,947.43
5. Step 5: Solve for x
   x = 13,947.43/131.89
6. Step 6: Final answer
   x = 105.75