Finding the Fourth Proportional to 30,890.46, 42,628.88 and 16,743.30

Step by Step Solution

1. Step 1: Write the proportion equation
   30,890.46 : 42,628.88 = 16,743.30 : x
2. Step 2: Convert to fraction form
   30,890.46/42,628.88 = 16,743.30/x
3. Step 3: Cross multiply
   30,890.46x = 42,628.88 × 16,743.30
4. Step 4: Simplify right side
   30,890.46x = 713,748,126.50
5. Step 5: Solve for x
   x = 713,748,126.50/30,890.46
6. Step 6: Final answer
   x = 23,105.78