Finding the Fourth Proportional to 80,978.16, 111,805 and 52,367.04

Step by Step Solution

1. Step 1: Write the proportion equation
   80,978.16 : 111,805 = 52,367.04 : x
2. Step 2: Convert to fraction form
   80,978.16/111,805 = 52,367.04/x
3. Step 3: Cross multiply
   80,978.16x = 111,805 × 52,367.04
4. Step 4: Simplify right side
   80,978.16x = 5,854,896,907.20
5. Step 5: Solve for x
   x = 5,854,896,907.20/80,978.16
6. Step 6: Final answer
   x = 72,302.17