Finding the Fourth Proportional to 142,805.37, 197,077.83 and 79,139.04

Step by Step Solution

1. Step 1: Write the proportion equation
   142,805.37 : 197,077.83 = 79,139.04 : x
2. Step 2: Convert to fraction form
   142,805.37/197,077.83 = 79,139.04/x
3. Step 3: Cross multiply
   142,805.37x = 197,077.83 × 79,139.04
4. Step 4: Simplify right side
   142,805.37x = 15,596,550,271.48
5. Step 5: Solve for x
   x = 15,596,550,271.48/142,805.37
6. Step 6: Final answer
   x = 109,215.43