Finding the Fourth Proportional to 31,057.47, 42,859.58 and 16,910.33

Step by Step Solution

1. Step 1: Write the proportion equation
   31,057.47 : 42,859.58 = 16,910.33 : x
2. Step 2: Convert to fraction form
   31,057.47/42,859.58 = 16,910.33/x
3. Step 3: Cross multiply
   31,057.47x = 42,859.58 × 16,910.33
4. Step 4: Simplify right side
   31,057.47x = 724,769,342.61
5. Step 5: Solve for x
   x = 724,769,342.61/31,057.47
6. Step 6: Final answer
   x = 23,336.39