Finding the Fourth Proportional to 76.82, 105.94 and 67.61

Step by Step Solution

1. Step 1: Write the proportion equation
   76.82 : 105.94 = 67.61 : x
2. Step 2: Convert to fraction form
   76.82/105.94 = 67.61/x
3. Step 3: Cross multiply
   76.82x = 105.94 × 67.61
4. Step 4: Simplify right side
   76.82x = 7,162.95
5. Step 5: Solve for x
   x = 7,162.95/76.82
6. Step 6: Final answer
   x = 93.25