Finding the Fourth Proportional to 55,280.39, 76,288.97 and 31,411.10

Step by Step Solution

1. Step 1: Write the proportion equation
   55,280.39 : 76,288.97 = 31,411.10 : x
2. Step 2: Convert to fraction form
   55,280.39/76,288.97 = 31,411.10/x
3. Step 3: Cross multiply
   55,280.39x = 76,288.97 × 31,411.10
4. Step 4: Simplify right side
   55,280.39x = 2,396,320,734.82
5. Step 5: Solve for x
   x = 2,396,320,734.82/55,280.39
6. Step 6: Final answer
   x = 43,348.48