Finding the Fourth Proportional to 85.69, 118.23 and 50.69

Step by Step Solution

1. Step 1: Write the proportion equation
   85.69 : 118.23 = 50.69 : x
2. Step 2: Convert to fraction form
   85.69/118.23 = 50.69/x
3. Step 3: Cross multiply
   85.69x = 118.23 × 50.69
4. Step 4: Simplify right side
   85.69x = 5,993.18
5. Step 5: Solve for x
   x = 5,993.18/85.69
6. Step 6: Final answer
   x = 69.94