Finding the Fourth Proportional to 31,057.98, 42,859.64 and 16,910.82

Step by Step Solution

1. Step 1: Write the proportion equation
   31,057.98 : 42,859.64 = 16,910.82 : x
2. Step 2: Convert to fraction form
   31,057.98/42,859.64 = 16,910.82/x
3. Step 3: Cross multiply
   31,057.98x = 42,859.64 × 16,910.82
4. Step 4: Simplify right side
   31,057.98x = 724,791,657.30
5. Step 5: Solve for x
   x = 724,791,657.30/31,057.98
6. Step 6: Final answer
   x = 23,336.73