Finding the Fourth Proportional to 131.95, 182.10 and 76.72

Step by Step Solution

1. Step 1: Write the proportion equation
   131.95 : 182.10 = 76.72 : x
2. Step 2: Convert to fraction form
   131.95/182.10 = 76.72/x
3. Step 3: Cross multiply
   131.95x = 182.10 × 76.72
4. Step 4: Simplify right side
   131.95x = 13,970.54
5. Step 5: Solve for x
   x = 13,970.54/131.95
6. Step 6: Final answer
   x = 105.88