Finding the Fourth Proportional to 30,966.98, 42,734.61 and 16,819.94

Step by Step Solution

1. Step 1: Write the proportion equation
   30,966.98 : 42,734.61 = 16,819.94 : x
2. Step 2: Convert to fraction form
   30,966.98/42,734.61 = 16,819.94/x
3. Step 3: Cross multiply
   30,966.98x = 42,734.61 × 16,819.94
4. Step 4: Simplify right side
   30,966.98x = 718,793,576.12
5. Step 5: Solve for x
   x = 718,793,576.12/30,966.98
6. Step 6: Final answer
   x = 23,211.61