Finding the Fourth Proportional to 42.59, 58.77 and 23.18

Step by Step Solution

1. Step 1: Write the proportion equation
   42.59 : 58.77 = 23.18 : x
2. Step 2: Convert to fraction form
   42.59/58.77 = 23.18/x
3. Step 3: Cross multiply
   42.59x = 58.77 × 23.18
4. Step 4: Simplify right side
   42.59x = 1,362.25
5. Step 5: Solve for x
   x = 1,362.25/42.59
6. Step 6: Final answer
   x = 31.99