Finding the Fourth Proportional to 31,064.69, 42,869.33 and 16,917.59

Step by Step Solution

1. Step 1: Write the proportion equation
   31,064.69 : 42,869.33 = 16,917.59 : x
2. Step 2: Convert to fraction form
   31,064.69/42,869.33 = 16,917.59/x
3. Step 3: Cross multiply
   31,064.69x = 42,869.33 × 16,917.59
4. Step 4: Simplify right side
   31,064.69x = 725,245,449.58
5. Step 5: Solve for x
   x = 725,245,449.58/31,064.69
6. Step 6: Final answer
   x = 23,346.30