Finding the Fourth Proportional to 111,962.87, 154,521.52 and 66,641.01

Step by Step Solution

1. Step 1: Write the proportion equation
   111,962.87 : 154,521.52 = 66,641.01 : x
2. Step 2: Convert to fraction form
   111,962.87/154,521.52 = 66,641.01/x
3. Step 3: Cross multiply
   111,962.87x = 154,521.52 × 66,641.01
4. Step 4: Simplify right side
   111,962.87x = 10,297,469,413.48
5. Step 5: Solve for x
   x = 10,297,469,413.48/111,962.87
6. Step 6: Final answer
   x = 91,972.18