Finding the Fourth Proportional to 81,797.16, 122,643.18 and 34,443.12

Step by Step Solution

1. Step 1: Write the proportion equation
   81,797.16 : 122,643.18 = 34,443.12 : x
2. Step 2: Convert to fraction form
   81,797.16/122,643.18 = 34,443.12/x
3. Step 3: Cross multiply
   81,797.16x = 122,643.18 × 34,443.12
4. Step 4: Simplify right side
   81,797.16x = 4,224,213,765.92
5. Step 5: Solve for x
   x = 4,224,213,765.92/81,797.16
6. Step 6: Final answer
   x = 51,642.55