Finding the Fourth Proportional to 42.46, 58.96 and 42.06

Step by Step Solution

1. Step 1: Write the proportion equation
   42.46 : 58.96 = 42.06 : x
2. Step 2: Convert to fraction form
   42.46/58.96 = 42.06/x
3. Step 3: Cross multiply
   42.46x = 58.96 × 42.06
4. Step 4: Simplify right side
   42.46x = 2,479.86
5. Step 5: Solve for x
   x = 2,479.86/42.46
6. Step 6: Final answer
   x = 58.40