Finding the Fourth Proportional to 52.49, 78.42 and 50.69

Step by Step Solution

1. Step 1: Write the proportion equation
   52.49 : 78.42 = 50.69 : x
2. Step 2: Convert to fraction form
   52.49/78.42 = 50.69/x
3. Step 3: Cross multiply
   52.49x = 78.42 × 50.69
4. Step 4: Simplify right side
   52.49x = 3,975.21
5. Step 5: Solve for x
   x = 3,975.21/52.49
6. Step 6: Final answer
   x = 75.74