Finding the Fourth Proportional to 289,401.10, 434,131.71 and 79,039

Step by Step Solution

1. Step 1: Write the proportion equation
   289,401.10 : 434,131.71 = 79,039 : x
2. Step 2: Convert to fraction form
   289,401.10/434,131.71 = 79,039/x
3. Step 3: Cross multiply
   289,401.10x = 434,131.71 × 79,039
4. Step 4: Simplify right side
   289,401.10x = 34,313,336,226.69
5. Step 5: Solve for x
   x = 34,313,336,226.69/289,401.10
6. Step 6: Final answer
   x = 118,566.71