Finding the Fourth Proportional to 31,017.96, 42,819.48 and 19,846.44

Step by Step Solution

1. Step 1: Write the proportion equation
   31,017.96 : 42,819.48 = 19,846.44 : x
2. Step 2: Convert to fraction form
   31,017.96/42,819.48 = 19,846.44/x
3. Step 3: Cross multiply
   31,017.96x = 42,819.48 × 19,846.44
4. Step 4: Simplify right side
   31,017.96x = 849,814,240.65
5. Step 5: Solve for x
   x = 849,814,240.65/31,017.96
6. Step 6: Final answer
   x = 27,397.49