Finding the Fourth Proportional to 80,556.71, 111,199.25 and 53,689.41

Step by Step Solution

1. Step 1: Write the proportion equation
   80,556.71 : 111,199.25 = 53,689.41 : x
2. Step 2: Convert to fraction form
   80,556.71/111,199.25 = 53,689.41/x
3. Step 3: Cross multiply
   80,556.71x = 111,199.25 × 53,689.41
4. Step 4: Simplify right side
   80,556.71x = 5,970,221,856.50
5. Step 5: Solve for x
   x = 5,970,221,856.50/80,556.71
6. Step 6: Final answer
   x = 74,112.04