Finding the Fourth Proportional to 67.91, 101.66 and 50.69

Step by Step Solution

1. Step 1: Write the proportion equation
   67.91 : 101.66 = 50.69 : x
2. Step 2: Convert to fraction form
   67.91/101.66 = 50.69/x
3. Step 3: Cross multiply
   67.91x = 101.66 × 50.69
4. Step 4: Simplify right side
   67.91x = 5,153.15
5. Step 5: Solve for x
   x = 5,153.15/67.91
6. Step 6: Final answer
   x = 75.89