Finding the Fourth Proportional to 76.69, 105.87 and 49.08

Step by Step Solution

1. Step 1: Write the proportion equation
   76.69 : 105.87 = 49.08 : x
2. Step 2: Convert to fraction form
   76.69/105.87 = 49.08/x
3. Step 3: Cross multiply
   76.69x = 105.87 × 49.08
4. Step 4: Simplify right side
   76.69x = 5,196.10
5. Step 5: Solve for x
   x = 5,196.10/76.69
6. Step 6: Final answer
   x = 67.76