Finding the Fourth Proportional to 111,756.49, 167,744.90 and 82,091.05

Step by Step Solution

1. Step 1: Write the proportion equation
   111,756.49 : 167,744.90 = 82,091.05 : x
2. Step 2: Convert to fraction form
   111,756.49/167,744.90 = 82,091.05/x
3. Step 3: Cross multiply
   111,756.49x = 167,744.90 × 82,091.05
4. Step 4: Simplify right side
   111,756.49x = 13,770,354,973.15
5. Step 5: Solve for x
   x = 13,770,354,973.15/111,756.49
6. Step 6: Final answer
   x = 123,217.50