Finding the Fourth Proportional to 69.92, 104.71 and 50.61

Step by Step Solution

1. Step 1: Write the proportion equation
   69.92 : 104.71 = 50.61 : x
2. Step 2: Convert to fraction form
   69.92/104.71 = 50.61/x
3. Step 3: Cross multiply
   69.92x = 104.71 × 50.61
4. Step 4: Simplify right side
   69.92x = 5,299.37
5. Step 5: Solve for x
   x = 5,299.37/69.92
6. Step 6: Final answer
   x = 75.79