Finding the Fourth Proportional to 131.59, 181.56 and 76.29

Step by Step Solution

1. Step 1: Write the proportion equation
   131.59 : 181.56 = 76.29 : x
2. Step 2: Convert to fraction form
   131.59/181.56 = 76.29/x
3. Step 3: Cross multiply
   131.59x = 181.56 × 76.29
4. Step 4: Simplify right side
   131.59x = 13,851.89
5. Step 5: Solve for x
   x = 13,851.89/131.59
6. Step 6: Final answer
   x = 105.27