Finding the Fourth Proportional to 30,818.49, 42,529.37 and 16,671.30

Step by Step Solution

1. Step 1: Write the proportion equation
   30,818.49 : 42,529.37 = 16,671.30 : x
2. Step 2: Convert to fraction form
   30,818.49/42,529.37 = 16,671.30/x
3. Step 3: Cross multiply
   30,818.49x = 42,529.37 × 16,671.30
4. Step 4: Simplify right side
   30,818.49x = 709,019,802.72
5. Step 5: Solve for x
   x = 709,019,802.72/30,818.49
6. Step 6: Final answer
   x = 23,006.31