Finding the Fourth Proportional to 30,967.07, 42,734.78 and 16,819.92

Step by Step Solution

1. Step 1: Write the proportion equation
   30,967.07 : 42,734.78 = 16,819.92 : x
2. Step 2: Convert to fraction form
   30,967.07/42,734.78 = 16,819.92/x
3. Step 3: Cross multiply
   30,967.07x = 42,734.78 × 16,819.92
4. Step 4: Simplify right side
   30,967.07x = 718,795,580.82
5. Step 5: Solve for x
   x = 718,795,580.82/30,967.07
6. Step 6: Final answer
   x = 23,211.61