Finding the Fourth Proportional to 31,104.63, 42,924.38 and 19,926.63

Step by Step Solution

1. Step 1: Write the proportion equation
   31,104.63 : 42,924.38 = 19,926.63 : x
2. Step 2: Convert to fraction form
   31,104.63/42,924.38 = 19,926.63/x
3. Step 3: Cross multiply
   31,104.63x = 42,924.38 × 19,926.63
4. Step 4: Simplify right side
   31,104.63x = 855,338,073.43
5. Step 5: Solve for x
   x = 855,338,073.43/31,104.63
6. Step 6: Final answer
   x = 27,498.74