Finding the Fourth Proportional to 80,603.10, 112,936.50 and 80,603.10

Step by Step Solution

1. Step 1: Write the proportion equation
   80,603.10 : 112,936.50 = 80,603.10 : x
2. Step 2: Convert to fraction form
   80,603.10/112,936.50 = 80,603.10/x
3. Step 3: Cross multiply
   80,603.10x = 112,936.50 × 80,603.10
4. Step 4: Simplify right side
   80,603.10x = 9,103,032,003.15
5. Step 5: Solve for x
   x = 9,103,032,003.15/80,603.10
6. Step 6: Final answer
   x = 112,936.50