Finding the Fourth Proportional to 123,825.36, 170,791.56 and 76,105.56

Step by Step Solution

1. Step 1: Write the proportion equation
   123,825.36 : 170,791.56 = 76,105.56 : x
2. Step 2: Convert to fraction form
   123,825.36/170,791.56 = 76,105.56/x
3. Step 3: Cross multiply
   123,825.36x = 170,791.56 × 76,105.56
4. Step 4: Simplify right side
   123,825.36x = 12,998,187,317.07
5. Step 5: Solve for x
   x = 12,998,187,317.07/123,825.36
6. Step 6: Final answer
   x = 104,971.93