Finding the Fourth Proportional to 80,760.78, 111,455.91 and 46,778.40

Step by Step Solution

1. Step 1: Write the proportion equation
   80,760.78 : 111,455.91 = 46,778.40 : x
2. Step 2: Convert to fraction form
   80,760.78/111,455.91 = 46,778.40/x
3. Step 3: Cross multiply
   80,760.78x = 111,455.91 × 46,778.40
4. Step 4: Simplify right side
   80,760.78x = 5,213,729,140.34
5. Step 5: Solve for x
   x = 5,213,729,140.34/80,760.78
6. Step 6: Final answer
   x = 64,557.69