Finding the Fourth Proportional to 42.35, 58.42 and 30.52

Step by Step Solution

1. Step 1: Write the proportion equation
   42.35 : 58.42 = 30.52 : x
2. Step 2: Convert to fraction form
   42.35/58.42 = 30.52/x
3. Step 3: Cross multiply
   42.35x = 58.42 × 30.52
4. Step 4: Simplify right side
   42.35x = 1,782.53
5. Step 5: Solve for x
   x = 1,782.53/42.35
6. Step 6: Final answer
   x = 42.09