Finding the Fourth Proportional to 80,978.88, 111,747.72 and 46,985.68

Step by Step Solution

1. Step 1: Write the proportion equation
   80,978.88 : 111,747.72 = 46,985.68 : x
2. Step 2: Convert to fraction form
   80,978.88/111,747.72 = 46,985.68/x
3. Step 3: Cross multiply
   80,978.88x = 111,747.72 × 46,985.68
4. Step 4: Simplify right side
   80,978.88x = 5,250,542,612.65
5. Step 5: Solve for x
   x = 5,250,542,612.65/80,978.88
6. Step 6: Final answer
   x = 64,838.42