Finding the Fourth Proportional to 43.02, 58.95 and 42.39

Step by Step Solution

1. Step 1: Write the proportion equation
   43.02 : 58.95 = 42.39 : x
2. Step 2: Convert to fraction form
   43.02/58.95 = 42.39/x
3. Step 3: Cross multiply
   43.02x = 58.95 × 42.39
4. Step 4: Simplify right side
   43.02x = 2,498.89
5. Step 5: Solve for x
   x = 2,498.89/43.02
6. Step 6: Final answer
   x = 58.09