Finding the Fourth Proportional to 80,783.21, 111,463.91 and 46,789.63

Step by Step Solution

1. Step 1: Write the proportion equation
   80,783.21 : 111,463.91 = 46,789.63 : x
2. Step 2: Convert to fraction form
   80,783.21/111,463.91 = 46,789.63/x
3. Step 3: Cross multiply
   80,783.21x = 111,463.91 × 46,789.63
4. Step 4: Simplify right side
   80,783.21x = 5,215,354,873.31
5. Step 5: Solve for x
   x = 5,215,354,873.31/80,783.21
6. Step 6: Final answer
   x = 64,559.89