Finding the Fourth Proportional to 52.70, 78.59 and 50.82

Step by Step Solution

1. Step 1: Write the proportion equation
   52.70 : 78.59 = 50.82 : x
2. Step 2: Convert to fraction form
   52.70/78.59 = 50.82/x
3. Step 3: Cross multiply
   52.70x = 78.59 × 50.82
4. Step 4: Simplify right side
   52.70x = 3,993.69
5. Step 5: Solve for x
   x = 3,993.69/52.70
6. Step 6: Final answer
   x = 75.78