Finding the Fourth Proportional to 31,031.31, 42,823.31 and 16,884.17

Step by Step Solution

1. Step 1: Write the proportion equation
   31,031.31 : 42,823.31 = 16,884.17 : x
2. Step 2: Convert to fraction form
   31,031.31/42,823.31 = 16,884.17/x
3. Step 3: Cross multiply
   31,031.31x = 42,823.31 × 16,884.17
4. Step 4: Simplify right side
   31,031.31x = 723,036,046.00
5. Step 5: Solve for x
   x = 723,036,046.00/31,031.31
6. Step 6: Final answer
   x = 23,300.21