Finding the Fourth Proportional to 172,290.08, 258,200.22 and 83,366.12

Step by Step Solution

1. Step 1: Write the proportion equation
   172,290.08 : 258,200.22 = 83,366.12 : x
2. Step 2: Convert to fraction form
   172,290.08/258,200.22 = 83,366.12/x
3. Step 3: Cross multiply
   172,290.08x = 258,200.22 × 83,366.12
4. Step 4: Simplify right side
   172,290.08x = 21,525,150,524.55
5. Step 5: Solve for x
   x = 21,525,150,524.55/172,290.08
6. Step 6: Final answer
   x = 124,935.52