Finding the Fourth Proportional to 55,280.91, 76,289.72 and 31,411.63

Step by Step Solution

1. Step 1: Write the proportion equation
   55,280.91 : 76,289.72 = 31,411.63 : x
2. Step 2: Convert to fraction form
   55,280.91/76,289.72 = 31,411.63/x
3. Step 3: Cross multiply
   55,280.91x = 76,289.72 × 31,411.63
4. Step 4: Simplify right side
   55,280.91x = 2,396,384,300.39
5. Step 5: Solve for x
   x = 2,396,384,300.39/55,280.91
6. Step 6: Final answer
   x = 43,349.22