Finding the Fourth Proportional to 172,570.28, 258,854.72 and 52,626.88

Step by Step Solution

1. Step 1: Write the proportion equation
   172,570.28 : 258,854.72 = 52,626.88 : x
2. Step 2: Convert to fraction form
   172,570.28/258,854.72 = 52,626.88/x
3. Step 3: Cross multiply
   172,570.28x = 258,854.72 × 52,626.88
4. Step 4: Simplify right side
   172,570.28x = 13,622,716,969.59
5. Step 5: Solve for x
   x = 13,622,716,969.59/172,570.28
6. Step 6: Final answer
   x = 78,940.11