Finding the Fourth Proportional to 80,431.69, 111,005.57 and 46,440.12

Step by Step Solution

1. Step 1: Write the proportion equation
   80,431.69 : 111,005.57 = 46,440.12 : x
2. Step 2: Convert to fraction form
   80,431.69/111,005.57 = 46,440.12/x
3. Step 3: Cross multiply
   80,431.69x = 111,005.57 × 46,440.12
4. Step 4: Simplify right side
   80,431.69x = 5,155,111,899.43
5. Step 5: Solve for x
   x = 5,155,111,899.43/80,431.69
6. Step 6: Final answer
   x = 64,093.05