Finding the Fourth Proportional to 30,818.50, 42,529.48 and 16,671.34

Step by Step Solution

1. Step 1: Write the proportion equation
   30,818.50 : 42,529.48 = 16,671.34 : x
2. Step 2: Convert to fraction form
   30,818.50/42,529.48 = 16,671.34/x
3. Step 3: Cross multiply
   30,818.50x = 42,529.48 × 16,671.34
4. Step 4: Simplify right side
   30,818.50x = 709,023,421.10
5. Step 5: Solve for x
   x = 709,023,421.10/30,818.50
6. Step 6: Final answer
   x = 23,006.42