Finding the Fourth Proportional to 111,942.84, 154,362.73 and 86,453.36

Step by Step Solution

1. Step 1: Write the proportion equation
   111,942.84 : 154,362.73 = 86,453.36 : x
2. Step 2: Convert to fraction form
   111,942.84/154,362.73 = 86,453.36/x
3. Step 3: Cross multiply
   111,942.84x = 154,362.73 × 86,453.36
4. Step 4: Simplify right side
   111,942.84x = 13,345,175,463.19
5. Step 5: Solve for x
   x = 13,345,175,463.19/111,942.84
6. Step 6: Final answer
   x = 119,214.19