Finding the Fourth Proportional to 198,516.67, 297,830.59 and 80,271.05

Step by Step Solution

1. Step 1: Write the proportion equation
   198,516.67 : 297,830.59 = 80,271.05 : x
2. Step 2: Convert to fraction form
   198,516.67/297,830.59 = 80,271.05/x
3. Step 3: Cross multiply
   198,516.67x = 297,830.59 × 80,271.05
4. Step 4: Simplify right side
   198,516.67x = 23,907,172,491.59
5. Step 5: Solve for x
   x = 23,907,172,491.59/198,516.67
6. Step 6: Final answer
   x = 120,429.04