Finding the Fourth Proportional to 31,076.16, 42,884.28 and 16,928.16

Step by Step Solution

1. Step 1: Write the proportion equation
   31,076.16 : 42,884.28 = 16,928.16 : x
2. Step 2: Convert to fraction form
   31,076.16/42,884.28 = 16,928.16/x
3. Step 3: Cross multiply
   31,076.16x = 42,884.28 × 16,928.16
4. Step 4: Simplify right side
   31,076.16x = 725,951,953.32
5. Step 5: Solve for x
   x = 725,951,953.32/31,076.16
6. Step 6: Final answer
   x = 23,360.41