Finding the Fourth Proportional to 30,862.92, 42,590.79 and 16,715.82

Step by Step Solution

1. Step 1: Write the proportion equation
   30,862.92 : 42,590.79 = 16,715.82 : x
2. Step 2: Convert to fraction form
   30,862.92/42,590.79 = 16,715.82/x
3. Step 3: Cross multiply
   30,862.92x = 42,590.79 × 16,715.82
4. Step 4: Simplify right side
   30,862.92x = 711,939,979.30
5. Step 5: Solve for x
   x = 711,939,979.30/30,862.92
6. Step 6: Final answer
   x = 23,067.81