Finding the Fourth Proportional to 31,032.34, 42,824.74 and 16,885.18

Step by Step Solution

1. Step 1: Write the proportion equation
   31,032.34 : 42,824.74 = 16,885.18 : x
2. Step 2: Convert to fraction form
   31,032.34/42,824.74 = 16,885.18/x
3. Step 3: Cross multiply
   31,032.34x = 42,824.74 × 16,885.18
4. Step 4: Simplify right side
   31,032.34x = 723,103,443.35
5. Step 5: Solve for x
   x = 723,103,443.35/31,032.34
6. Step 6: Final answer
   x = 23,301.61