Finding the Fourth Proportional to 50.57, 69.56 and 42.37

Step by Step Solution

1. Step 1: Write the proportion equation
   50.57 : 69.56 = 42.37 : x
2. Step 2: Convert to fraction form
   50.57/69.56 = 42.37/x
3. Step 3: Cross multiply
   50.57x = 69.56 × 42.37
4. Step 4: Simplify right side
   50.57x = 2,947.42
5. Step 5: Solve for x
   x = 2,947.42/50.57
6. Step 6: Final answer
   x = 58.28