Finding the Fourth Proportional to 172,095.12, 258,103.69 and 65,441.05

Step by Step Solution

1. Step 1: Write the proportion equation
   172,095.12 : 258,103.69 = 65,441.05 : x
2. Step 2: Convert to fraction form
   172,095.12/258,103.69 = 65,441.05/x
3. Step 3: Cross multiply
   172,095.12x = 258,103.69 × 65,441.05
4. Step 4: Simplify right side
   172,095.12x = 16,890,576,482.47
5. Step 5: Solve for x
   x = 16,890,576,482.47/172,095.12
6. Step 6: Final answer
   x = 98,146.75