Finding the Fourth Proportional to 31,076.16, 42,885.09 and 16,929

Step by Step Solution

1. Step 1: Write the proportion equation
   31,076.16 : 42,885.09 = 16,929 : x
2. Step 2: Convert to fraction form
   31,076.16/42,885.09 = 16,929/x
3. Step 3: Cross multiply
   31,076.16x = 42,885.09 × 16,929
4. Step 4: Simplify right side
   31,076.16x = 726,001,688.61
5. Step 5: Solve for x
   x = 726,001,688.61/31,076.16
6. Step 6: Final answer
   x = 23,362.01