Finding the Fourth Proportional to 30,856.86, 42,582.42 and 16,709.76

Step by Step Solution

1. Step 1: Write the proportion equation
   30,856.86 : 42,582.42 = 16,709.76 : x
2. Step 2: Convert to fraction form
   30,856.86/42,582.42 = 16,709.76/x
3. Step 3: Cross multiply
   30,856.86x = 42,582.42 × 16,709.76
4. Step 4: Simplify right side
   30,856.86x = 711,542,018.42
5. Step 5: Solve for x
   x = 711,542,018.42/30,856.86
6. Step 6: Final answer
   x = 23,059.44