Finding the Fourth Proportional to 31,033, 42,825.18 and 16,885.60

Step by Step Solution

1. Step 1: Write the proportion equation
   31,033 : 42,825.18 = 16,885.60 : x
2. Step 2: Convert to fraction form
   31,033/42,825.18 = 16,885.60/x
3. Step 3: Cross multiply
   31,033x = 42,825.18 × 16,885.60
4. Step 4: Simplify right side
   31,033x = 723,128,859.41
5. Step 5: Solve for x
   x = 723,128,859.41/31,033
6. Step 6: Final answer
   x = 23,301.93