Finding the Fourth Proportional to 80,439, 111,005.92 and 46,911.48

Step by Step Solution

1. Step 1: Write the proportion equation
   80,439 : 111,005.92 = 46,911.48 : x
2. Step 2: Convert to fraction form
   80,439/111,005.92 = 46,911.48/x
3. Step 3: Cross multiply
   80,439x = 111,005.92 × 46,911.48
4. Step 4: Simplify right side
   80,439x = 5,207,451,995.96
5. Step 5: Solve for x
   x = 5,207,451,995.96/80,439
6. Step 6: Final answer
   x = 64,737.90