Finding the Fourth Proportional to 42.91, 59.20 and 34.74

Step by Step Solution

1. Step 1: Write the proportion equation
   42.91 : 59.20 = 34.74 : x
2. Step 2: Convert to fraction form
   42.91/59.20 = 34.74/x
3. Step 3: Cross multiply
   42.91x = 59.20 × 34.74
4. Step 4: Simplify right side
   42.91x = 2,056.52
5. Step 5: Solve for x
   x = 2,056.52/42.91
6. Step 6: Final answer
   x = 47.93