Finding the Fourth Proportional to 69.96, 104.96 and 50.72

Step by Step Solution

1. Step 1: Write the proportion equation
   69.96 : 104.96 = 50.72 : x
2. Step 2: Convert to fraction form
   69.96/104.96 = 50.72/x
3. Step 3: Cross multiply
   69.96x = 104.96 × 50.72
4. Step 4: Simplify right side
   69.96x = 5,323.57
5. Step 5: Solve for x
   x = 5,323.57/69.96
6. Step 6: Final answer
   x = 76.09