Finding the Fourth Proportional to 31,076.18, 42,884.91 and 16,929.02

Step by Step Solution

1. Step 1: Write the proportion equation
   31,076.18 : 42,884.91 = 16,929.02 : x
2. Step 2: Convert to fraction form
   31,076.18/42,884.91 = 16,929.02/x
3. Step 3: Cross multiply
   31,076.18x = 42,884.91 × 16,929.02
4. Step 4: Simplify right side
   31,076.18x = 725,999,499.09
5. Step 5: Solve for x
   x = 725,999,499.09/31,076.18
6. Step 6: Final answer
   x = 23,361.93