Finding the Fourth Proportional to 31,050.39, 42,847.09 and 17,621.65

Step by Step Solution

1. Step 1: Write the proportion equation
   31,050.39 : 42,847.09 = 17,621.65 : x
2. Step 2: Convert to fraction form
   31,050.39/42,847.09 = 17,621.65/x
3. Step 3: Cross multiply
   31,050.39x = 42,847.09 × 17,621.65
4. Step 4: Simplify right side
   31,050.39x = 755,036,272.33
5. Step 5: Solve for x
   x = 755,036,272.33/31,050.39
6. Step 6: Final answer
   x = 24,316.48