Finding the Fourth Proportional to 83,018.56, 123,936.68 and 80,102.56

Step by Step Solution

1. Step 1: Write the proportion equation
   83,018.56 : 123,936.68 = 80,102.56 : x
2. Step 2: Convert to fraction form
   83,018.56/123,936.68 = 80,102.56/x
3. Step 3: Cross multiply
   83,018.56x = 123,936.68 × 80,102.56
4. Step 4: Simplify right side
   83,018.56x = 9,927,645,345.90
5. Step 5: Solve for x
   x = 9,927,645,345.90/83,018.56
6. Step 6: Final answer
   x = 119,583.44