Finding the Fourth Proportional to 31,439.88, 43,388.46 and 17,293.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,439.88 : 43,388.46 = 17,293.50 : x
2. Step 2: Convert to fraction form
   31,439.88/43,388.46 = 17,293.50/x
3. Step 3: Cross multiply
   31,439.88x = 43,388.46 × 17,293.50
4. Step 4: Simplify right side
   31,439.88x = 750,338,333.01
5. Step 5: Solve for x
   x = 750,338,333.01/31,439.88
6. Step 6: Final answer
   x = 23,865.81