Finding the Fourth Proportional to 172,552.69, 258,790.15 and 67,317.49

Step by Step Solution

1. Step 1: Write the proportion equation
   172,552.69 : 258,790.15 = 67,317.49 : x
2. Step 2: Convert to fraction form
   172,552.69/258,790.15 = 67,317.49/x
3. Step 3: Cross multiply
   172,552.69x = 258,790.15 × 67,317.49
4. Step 4: Simplify right side
   172,552.69x = 17,421,103,334.72
5. Step 5: Solve for x
   x = 17,421,103,334.72/172,552.69
6. Step 6: Final answer
   x = 100,961.06