Finding the Fourth Proportional to 111,919.39, 154,106.73 and 84,364.09

Step by Step Solution

1. Step 1: Write the proportion equation
   111,919.39 : 154,106.73 = 84,364.09 : x
2. Step 2: Convert to fraction form
   111,919.39/154,106.73 = 84,364.09/x
3. Step 3: Cross multiply
   111,919.39x = 154,106.73 × 84,364.09
4. Step 4: Simplify right side
   111,919.39x = 13,001,074,039.33
5. Step 5: Solve for x
   x = 13,001,074,039.33/111,919.39
6. Step 6: Final answer
   x = 116,164.63