Finding the Fourth Proportional to 80,979.93, 111,753.78 and 46,990.29

Step by Step Solution

1. Step 1: Write the proportion equation
   80,979.93 : 111,753.78 = 46,990.29 : x
2. Step 2: Convert to fraction form
   80,979.93/111,753.78 = 46,990.29/x
3. Step 3: Cross multiply
   80,979.93x = 111,753.78 × 46,990.29
4. Step 4: Simplify right side
   80,979.93x = 5,251,342,530.80
5. Step 5: Solve for x
   x = 5,251,342,530.80/80,979.93
6. Step 6: Final answer
   x = 64,847.46