Finding the Fourth Proportional to 43.18, 59.56 and 42.58

Step by Step Solution

1. Step 1: Write the proportion equation
   43.18 : 59.56 = 42.58 : x
2. Step 2: Convert to fraction form
   43.18/59.56 = 42.58/x
3. Step 3: Cross multiply
   43.18x = 59.56 × 42.58
4. Step 4: Simplify right side
   43.18x = 2,536.06
5. Step 5: Solve for x
   x = 2,536.06/43.18
6. Step 6: Final answer
   x = 58.73