Finding the Fourth Proportional to 42.99, 59.34 and 34.79

Step by Step Solution

1. Step 1: Write the proportion equation
   42.99 : 59.34 = 34.79 : x
2. Step 2: Convert to fraction form
   42.99/59.34 = 34.79/x
3. Step 3: Cross multiply
   42.99x = 59.34 × 34.79
4. Step 4: Simplify right side
   42.99x = 2,064.14
5. Step 5: Solve for x
   x = 2,064.14/42.99
6. Step 6: Final answer
   x = 48.01