Finding the Fourth Proportional to 31,511.87, 43,485.82 and 17,171.83

Step by Step Solution

1. Step 1: Write the proportion equation
   31,511.87 : 43,485.82 = 17,171.83 : x
2. Step 2: Convert to fraction form
   31,511.87/43,485.82 = 17,171.83/x
3. Step 3: Cross multiply
   31,511.87x = 43,485.82 × 17,171.83
4. Step 4: Simplify right side
   31,511.87x = 746,730,891.02
5. Step 5: Solve for x
   x = 746,730,891.02/31,511.87
6. Step 6: Final answer
   x = 23,696.81