Finding the Fourth Proportional to 42.34, 58.49 and 30.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42.34 : 58.49 = 30.10 : x
2. Step 2: Convert to fraction form
   42.34/58.49 = 30.10/x
3. Step 3: Cross multiply
   42.34x = 58.49 × 30.10
4. Step 4: Simplify right side
   42.34x = 1,760.55
5. Step 5: Solve for x
   x = 1,760.55/42.34
6. Step 6: Final answer
   x = 41.58