Finding the Fourth Proportional to 31,028.06, 42,819.64 and 16,881.82

Step by Step Solution

1. Step 1: Write the proportion equation
   31,028.06 : 42,819.64 = 16,881.82 : x
2. Step 2: Convert to fraction form
   31,028.06/42,819.64 = 16,881.82/x
3. Step 3: Cross multiply
   31,028.06x = 42,819.64 × 16,881.82
4. Step 4: Simplify right side
   31,028.06x = 722,873,305.69
5. Step 5: Solve for x
   x = 722,873,305.69/31,028.06
6. Step 6: Final answer
   x = 23,297.40