Finding the Fourth Proportional to 111,855.62, 154,393.34 and 89,351.39

Step by Step Solution

1. Step 1: Write the proportion equation
   111,855.62 : 154,393.34 = 89,351.39 : x
2. Step 2: Convert to fraction form
   111,855.62/154,393.34 = 89,351.39/x
3. Step 3: Cross multiply
   111,855.62x = 154,393.34 × 89,351.39
4. Step 4: Simplify right side
   111,855.62x = 13,795,258,317.02
5. Step 5: Solve for x
   x = 13,795,258,317.02/111,855.62
6. Step 6: Final answer
   x = 123,330.94