Finding the Fourth Proportional to 30,819.42, 42,530.81 and 16,672.23

Step by Step Solution

1. Step 1: Write the proportion equation
   30,819.42 : 42,530.81 = 16,672.23 : x
2. Step 2: Convert to fraction form
   30,819.42/42,530.81 = 16,672.23/x
3. Step 3: Cross multiply
   30,819.42x = 42,530.81 × 16,672.23
4. Step 4: Simplify right side
   30,819.42x = 709,083,363.05
5. Step 5: Solve for x
   x = 709,083,363.05/30,819.42
6. Step 6: Final answer
   x = 23,007.68