Finding the Fourth Proportional to 113,003.64, 155,949.91 and 67,689

Step by Step Solution

1. Step 1: Write the proportion equation
   113,003.64 : 155,949.91 = 67,689 : x
2. Step 2: Convert to fraction form
   113,003.64/155,949.91 = 67,689/x
3. Step 3: Cross multiply
   113,003.64x = 155,949.91 × 67,689
4. Step 4: Simplify right side
   113,003.64x = 10,556,093,288.77
5. Step 5: Solve for x
   x = 10,556,093,288.77/113,003.64
6. Step 6: Final answer
   x = 93,413.75