Finding the Fourth Proportional to 42.86, 58.79 and 42.53

Step by Step Solution

1. Step 1: Write the proportion equation
   42.86 : 58.79 = 42.53 : x
2. Step 2: Convert to fraction form
   42.86/58.79 = 42.53/x
3. Step 3: Cross multiply
   42.86x = 58.79 × 42.53
4. Step 4: Simplify right side
   42.86x = 2,500.15
5. Step 5: Solve for x
   x = 2,500.15/42.86
6. Step 6: Final answer
   x = 58.33