Finding the Fourth Proportional to 111,086.26, 153,139.56 and 79,199.80

Step by Step Solution

1. Step 1: Write the proportion equation
   111,086.26 : 153,139.56 = 79,199.80 : x
2. Step 2: Convert to fraction form
   111,086.26/153,139.56 = 79,199.80/x
3. Step 3: Cross multiply
   111,086.26x = 153,139.56 × 79,199.80
4. Step 4: Simplify right side
   111,086.26x = 12,128,622,524.09
5. Step 5: Solve for x
   x = 12,128,622,524.09/111,086.26
6. Step 6: Final answer
   x = 109,182.02