Finding the Fourth Proportional to 111,080.26, 153,131.31 and 79,193.80

Step by Step Solution

1. Step 1: Write the proportion equation
   111,080.26 : 153,131.31 = 79,193.80 : x
2. Step 2: Convert to fraction form
   111,080.26/153,131.31 = 79,193.80/x
3. Step 3: Cross multiply
   111,080.26x = 153,131.31 × 79,193.80
4. Step 4: Simplify right side
   111,080.26x = 12,127,050,337.88
5. Step 5: Solve for x
   x = 12,127,050,337.88/111,080.26
6. Step 6: Final answer
   x = 109,173.77