Finding the Fourth Proportional to 31,078.22, 42,890.94 and 19,148.54

Step by Step Solution

1. Step 1: Write the proportion equation
   31,078.22 : 42,890.94 = 19,148.54 : x
2. Step 2: Convert to fraction form
   31,078.22/42,890.94 = 19,148.54/x
3. Step 3: Cross multiply
   31,078.22x = 42,890.94 × 19,148.54
4. Step 4: Simplify right side
   31,078.22x = 821,298,665.77
5. Step 5: Solve for x
   x = 821,298,665.77/31,078.22
6. Step 6: Final answer
   x = 26,426.83