Finding the Fourth Proportional to 111,078.87, 153,129.39 and 79,192.41

Step by Step Solution

1. Step 1: Write the proportion equation
   111,078.87 : 153,129.39 = 79,192.41 : x
2. Step 2: Convert to fraction form
   111,078.87/153,129.39 = 79,192.41/x
3. Step 3: Cross multiply
   111,078.87x = 153,129.39 × 79,192.41
4. Step 4: Simplify right side
   111,078.87x = 12,126,685,435.93
5. Step 5: Solve for x
   x = 12,126,685,435.93/111,078.87
6. Step 6: Final answer
   x = 109,171.85