Finding the Fourth Proportional to 42.62, 58.39 and 42.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42.62 : 58.39 = 42.50 : x
2. Step 2: Convert to fraction form
   42.62/58.39 = 42.50/x
3. Step 3: Cross multiply
   42.62x = 58.39 × 42.50
4. Step 4: Simplify right side
   42.62x = 2,481.58
5. Step 5: Solve for x
   x = 2,481.58/42.62
6. Step 6: Final answer
   x = 58.23