Finding the Fourth Proportional to 31,819.41, 43,914.23 and 20,344.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,819.41 : 43,914.23 = 20,344.72 : x
2. Step 2: Convert to fraction form
   31,819.41/43,914.23 = 20,344.72/x
3. Step 3: Cross multiply
   31,819.41x = 43,914.23 × 20,344.72
4. Step 4: Simplify right side
   31,819.41x = 893,422,713.37
5. Step 5: Solve for x
   x = 893,422,713.37/31,819.41
6. Step 6: Final answer
   x = 28,077.92