Finding the Fourth Proportional to 31,120.39, 42,933.81 and 19,162.97

Step by Step Solution

1. Step 1: Write the proportion equation
   31,120.39 : 42,933.81 = 19,162.97 : x
2. Step 2: Convert to fraction form
   31,120.39/42,933.81 = 19,162.97/x
3. Step 3: Cross multiply
   31,120.39x = 42,933.81 × 19,162.97
4. Step 4: Simplify right side
   31,120.39x = 822,739,313.02
5. Step 5: Solve for x
   x = 822,739,313.02/31,120.39
6. Step 6: Final answer
   x = 26,437.31