Finding the Fourth Proportional to 31,033.01, 42,819.03 and 20,293.63

Step by Step Solution

1. Step 1: Write the proportion equation
   31,033.01 : 42,819.03 = 20,293.63 : x
2. Step 2: Convert to fraction form
   31,033.01/42,819.03 = 20,293.63/x
3. Step 3: Cross multiply
   31,033.01x = 42,819.03 × 20,293.63
4. Step 4: Simplify right side
   31,033.01x = 868,953,444.73
5. Step 5: Solve for x
   x = 868,953,444.73/31,033.01
6. Step 6: Final answer
   x = 28,000.94