Finding the Fourth Proportional to 30,872.69, 42,604.52 and 16,725.54

Step by Step Solution

1. Step 1: Write the proportion equation
   30,872.69 : 42,604.52 = 16,725.54 : x
2. Step 2: Convert to fraction form
   30,872.69/42,604.52 = 16,725.54/x
3. Step 3: Cross multiply
   30,872.69x = 42,604.52 × 16,725.54
4. Step 4: Simplify right side
   30,872.69x = 712,583,519.81
5. Step 5: Solve for x
   x = 712,583,519.81/30,872.69
6. Step 6: Final answer
   x = 23,081.36