Finding the Fourth Proportional to 52.72, 78.62 and 50.60

Step by Step Solution

1. Step 1: Write the proportion equation
   52.72 : 78.62 = 50.60 : x
2. Step 2: Convert to fraction form
   52.72/78.62 = 50.60/x
3. Step 3: Cross multiply
   52.72x = 78.62 × 50.60
4. Step 4: Simplify right side
   52.72x = 3,978.12
5. Step 5: Solve for x
   x = 3,978.12/52.72
6. Step 6: Final answer
   x = 75.46