Finding the Fourth Proportional to 31,057.65, 42,858.27 and 16,910.46

Step by Step Solution

1. Step 1: Write the proportion equation
   31,057.65 : 42,858.27 = 16,910.46 : x
2. Step 2: Convert to fraction form
   31,057.65/42,858.27 = 16,910.46/x
3. Step 3: Cross multiply
   31,057.65x = 42,858.27 × 16,910.46
4. Step 4: Simplify right side
   31,057.65x = 724,753,060.50
5. Step 5: Solve for x
   x = 724,753,060.50/31,057.65
6. Step 6: Final answer
   x = 23,335.73