Finding the Fourth Proportional to 113,298, 156,243.96 and 82,643.28

Step by Step Solution

1. Step 1: Write the proportion equation
   113,298 : 156,243.96 = 82,643.28 : x
2. Step 2: Convert to fraction form
   113,298/156,243.96 = 82,643.28/x
3. Step 3: Cross multiply
   113,298x = 156,243.96 × 82,643.28
4. Step 4: Simplify right side
   113,298x = 12,912,513,334.59
5. Step 5: Solve for x
   x = 12,912,513,334.59/113,298
6. Step 6: Final answer
   x = 113,969.47