Finding the Fourth Proportional to 30,890.49, 42,628.71 and 16,743.30

Step by Step Solution

1. Step 1: Write the proportion equation
   30,890.49 : 42,628.71 = 16,743.30 : x
2. Step 2: Convert to fraction form
   30,890.49/42,628.71 = 16,743.30/x
3. Step 3: Cross multiply
   30,890.49x = 42,628.71 × 16,743.30
4. Step 4: Simplify right side
   30,890.49x = 713,745,280.14
5. Step 5: Solve for x
   x = 713,745,280.14/30,890.49
6. Step 6: Final answer
   x = 23,105.66