Finding the Fourth Proportional to 31,790.48, 43,870.96 and 17,643.36

Step by Step Solution

1. Step 1: Write the proportion equation
   31,790.48 : 43,870.96 = 17,643.36 : x
2. Step 2: Convert to fraction form
   31,790.48/43,870.96 = 17,643.36/x
3. Step 3: Cross multiply
   31,790.48x = 43,870.96 × 17,643.36
4. Step 4: Simplify right side
   31,790.48x = 774,031,140.83
5. Step 5: Solve for x
   x = 774,031,140.83/31,790.48
6. Step 6: Final answer
   x = 24,347.89