Finding the Fourth Proportional to 111,799.04, 154,153.53 and 89,120.39

Step by Step Solution

1. Step 1: Write the proportion equation
   111,799.04 : 154,153.53 = 89,120.39 : x
2. Step 2: Convert to fraction form
   111,799.04/154,153.53 = 89,120.39/x
3. Step 3: Cross multiply
   111,799.04x = 154,153.53 × 89,120.39
4. Step 4: Simplify right side
   111,799.04x = 13,738,221,942.71
5. Step 5: Solve for x
   x = 13,738,221,942.71/111,799.04
6. Step 6: Final answer
   x = 122,883.19