Finding the Fourth Proportional to 31,032.72, 42,825.11 and 16,885.26

Step by Step Solution

1. Step 1: Write the proportion equation
   31,032.72 : 42,825.11 = 16,885.26 : x
2. Step 2: Convert to fraction form
   31,032.72/42,825.11 = 16,885.26/x
3. Step 3: Cross multiply
   31,032.72x = 42,825.11 × 16,885.26
4. Step 4: Simplify right side
   31,032.72x = 723,113,032.45
5. Step 5: Solve for x
   x = 723,113,032.45/31,032.72
6. Step 6: Final answer
   x = 23,301.63