Finding the Fourth Proportional to 329,128.50, 493,694.37 and 79,810.50

Step by Step Solution

1. Step 1: Write the proportion equation
   329,128.50 : 493,694.37 = 79,810.50 : x
2. Step 2: Convert to fraction form
   329,128.50/493,694.37 = 79,810.50/x
3. Step 3: Cross multiply
   329,128.50x = 493,694.37 × 79,810.50
4. Step 4: Simplify right side
   329,128.50x = 39,401,994,516.89
5. Step 5: Solve for x
   x = 39,401,994,516.89/329,128.50
6. Step 6: Final answer
   x = 119,716.14