Finding the Fourth Proportional to 69.81, 104.52 and 50.59

Step by Step Solution

1. Step 1: Write the proportion equation
   69.81 : 104.52 = 50.59 : x
2. Step 2: Convert to fraction form
   69.81/104.52 = 50.59/x
3. Step 3: Cross multiply
   69.81x = 104.52 × 50.59
4. Step 4: Simplify right side
   69.81x = 5,287.99
5. Step 5: Solve for x
   x = 5,287.99/69.81
6. Step 6: Final answer
   x = 75.75