Finding the Fourth Proportional to 30,857.12, 42,582.86 and 16,709.98

Step by Step Solution

1. Step 1: Write the proportion equation
   30,857.12 : 42,582.86 = 16,709.98 : x
2. Step 2: Convert to fraction form
   30,857.12/42,582.86 = 16,709.98/x
3. Step 3: Cross multiply
   30,857.12x = 42,582.86 × 16,709.98
4. Step 4: Simplify right side
   30,857.12x = 711,558,738.94
5. Step 5: Solve for x
   x = 711,558,738.94/30,857.12
6. Step 6: Final answer
   x = 23,059.79