Finding the Fourth Proportional to 172,231.99, 258,308.49 and 65,628.04

Step by Step Solution

1. Step 1: Write the proportion equation
   172,231.99 : 258,308.49 = 65,628.04 : x
2. Step 2: Convert to fraction form
   172,231.99/258,308.49 = 65,628.04/x
3. Step 3: Cross multiply
   172,231.99x = 258,308.49 × 65,628.04
4. Step 4: Simplify right side
   172,231.99x = 16,952,279,998.72
5. Step 5: Solve for x
   x = 16,952,279,998.72/172,231.99
6. Step 6: Final answer
   x = 98,427.01