Finding the Fourth Proportional to 31,091.20, 42,904.98 and 16,944.16

Step by Step Solution

1. Step 1: Write the proportion equation
   31,091.20 : 42,904.98 = 16,944.16 : x
2. Step 2: Convert to fraction form
   31,091.20/42,904.98 = 16,944.16/x
3. Step 3: Cross multiply
   31,091.20x = 42,904.98 × 16,944.16
4. Step 4: Simplify right side
   31,091.20x = 726,988,845.92
5. Step 5: Solve for x
   x = 726,988,845.92/31,091.20
6. Step 6: Final answer
   x = 23,382.46