Finding the Fourth Proportional to 42.69, 58.59 and 42.03

Step by Step Solution

1. Step 1: Write the proportion equation
   42.69 : 58.59 = 42.03 : x
2. Step 2: Convert to fraction form
   42.69/58.59 = 42.03/x
3. Step 3: Cross multiply
   42.69x = 58.59 × 42.03
4. Step 4: Simplify right side
   42.69x = 2,462.54
5. Step 5: Solve for x
   x = 2,462.54/42.69
6. Step 6: Final answer
   x = 57.68