Finding the Fourth Proportional to 30,735.91, 42,419.60 and 17,309.79

Step by Step Solution

1. Step 1: Write the proportion equation
   30,735.91 : 42,419.60 = 17,309.79 : x
2. Step 2: Convert to fraction form
   30,735.91/42,419.60 = 17,309.79/x
3. Step 3: Cross multiply
   30,735.91x = 42,419.60 × 17,309.79
4. Step 4: Simplify right side
   30,735.91x = 734,274,367.88
5. Step 5: Solve for x
   x = 734,274,367.88/30,735.91
6. Step 6: Final answer
   x = 23,889.79