Finding the Fourth Proportional to 111,751.99, 167,738.15 and 82,086.55

Step by Step Solution

1. Step 1: Write the proportion equation
   111,751.99 : 167,738.15 = 82,086.55 : x
2. Step 2: Convert to fraction form
   111,751.99/167,738.15 = 82,086.55/x
3. Step 3: Cross multiply
   111,751.99x = 167,738.15 × 82,086.55
4. Step 4: Simplify right side
   111,751.99x = 13,769,046,036.88
5. Step 5: Solve for x
   x = 13,769,046,036.88/111,751.99
6. Step 6: Final answer
   x = 123,210.75