Finding the Fourth Proportional to 31,116.93, 42,940.98 and 16,969.74

Step by Step Solution

1. Step 1: Write the proportion equation
   31,116.93 : 42,940.98 = 16,969.74 : x
2. Step 2: Convert to fraction form
   31,116.93/42,940.98 = 16,969.74/x
3. Step 3: Cross multiply
   31,116.93x = 42,940.98 × 16,969.74
4. Step 4: Simplify right side
   31,116.93x = 728,697,265.95
5. Step 5: Solve for x
   x = 728,697,265.95/31,116.93
6. Step 6: Final answer
   x = 23,418.03