Finding the Fourth Proportional to 31,062.40, 42,842.98 and 19,722.06

Step by Step Solution

1. Step 1: Write the proportion equation
   31,062.40 : 42,842.98 = 19,722.06 : x
2. Step 2: Convert to fraction form
   31,062.40/42,842.98 = 19,722.06/x
3. Step 3: Cross multiply
   31,062.40x = 42,842.98 × 19,722.06
4. Step 4: Simplify right side
   31,062.40x = 844,951,822.14
5. Step 5: Solve for x
   x = 844,951,822.14/31,062.40
6. Step 6: Final answer
   x = 27,201.76