Finding the Fourth Proportional to 31,091.88, 42,906.30 and 16,944.84

Step by Step Solution

1. Step 1: Write the proportion equation
   31,091.88 : 42,906.30 = 16,944.84 : x
2. Step 2: Convert to fraction form
   31,091.88/42,906.30 = 16,944.84/x
3. Step 3: Cross multiply
   31,091.88x = 42,906.30 × 16,944.84
4. Step 4: Simplify right side
   31,091.88x = 727,040,388.49
5. Step 5: Solve for x
   x = 727,040,388.49/31,091.88
6. Step 6: Final answer
   x = 23,383.61