Finding the Fourth Proportional to 31,032.24, 42,825.05 and 16,885.07

Step by Step Solution

1. Step 1: Write the proportion equation
   31,032.24 : 42,825.05 = 16,885.07 : x
2. Step 2: Convert to fraction form
   31,032.24/42,825.05 = 16,885.07/x
3. Step 3: Cross multiply
   31,032.24x = 42,825.05 × 16,885.07
4. Step 4: Simplify right side
   31,032.24x = 723,103,967.00
5. Step 5: Solve for x
   x = 723,103,967.00/31,032.24
6. Step 6: Final answer
   x = 23,301.70