Finding the Fourth Proportional to 31,076.26, 42,885.54 and 17,647.80

Step by Step Solution

1. Step 1: Write the proportion equation
   31,076.26 : 42,885.54 = 17,647.80 : x
2. Step 2: Convert to fraction form
   31,076.26/42,885.54 = 17,647.80/x
3. Step 3: Cross multiply
   31,076.26x = 42,885.54 × 17,647.80
4. Step 4: Simplify right side
   31,076.26x = 756,835,432.81
5. Step 5: Solve for x
   x = 756,835,432.81/31,076.26
6. Step 6: Final answer
   x = 24,354.14