Finding the Fourth Proportional to 31,003.56, 42,793.92 and 19,673.28

Step by Step Solution

1. Step 1: Write the proportion equation
   31,003.56 : 42,793.92 = 19,673.28 : x
2. Step 2: Convert to fraction form
   31,003.56/42,793.92 = 19,673.28/x
3. Step 3: Cross multiply
   31,003.56x = 42,793.92 × 19,673.28
4. Step 4: Simplify right side
   31,003.56x = 841,896,770.46
5. Step 5: Solve for x
   x = 841,896,770.46/31,003.56
6. Step 6: Final answer
   x = 27,154.84