Finding the Fourth Proportional to 42.32, 58.35 and 34.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42.32 : 58.35 = 34.56 : x
2. Step 2: Convert to fraction form
   42.32/58.35 = 34.56/x
3. Step 3: Cross multiply
   42.32x = 58.35 × 34.56
4. Step 4: Simplify right side
   42.32x = 2,016.71
5. Step 5: Solve for x
   x = 2,016.71/42.32
6. Step 6: Final answer
   x = 47.65