Finding the Fourth Proportional to 117,080.72, 161,595.24 and 79,367.12

Step by Step Solution

1. Step 1: Write the proportion equation
   117,080.72 : 161,595.24 = 79,367.12 : x
2. Step 2: Convert to fraction form
   117,080.72/161,595.24 = 79,367.12/x
3. Step 3: Cross multiply
   117,080.72x = 161,595.24 × 79,367.12
4. Step 4: Simplify right side
   117,080.72x = 12,825,348,804.51
5. Step 5: Solve for x
   x = 12,825,348,804.51/117,080.72
6. Step 6: Final answer
   x = 109,542.79