Finding the Fourth Proportional to 31,032.50, 42,824.49 and 16,885.10

Step by Step Solution

1. Step 1: Write the proportion equation
   31,032.50 : 42,824.49 = 16,885.10 : x
2. Step 2: Convert to fraction form
   31,032.50/42,824.49 = 16,885.10/x
3. Step 3: Cross multiply
   31,032.50x = 42,824.49 × 16,885.10
4. Step 4: Simplify right side
   31,032.50x = 723,095,796.10
5. Step 5: Solve for x
   x = 723,095,796.10/31,032.50
6. Step 6: Final answer
   x = 23,301.24