Finding the Fourth Proportional to 115,198.50, 158,982.09 and 64,897.50

Step by Step Solution

1. Step 1: Write the proportion equation
   115,198.50 : 158,982.09 = 64,897.50 : x
2. Step 2: Convert to fraction form
   115,198.50/158,982.09 = 64,897.50/x
3. Step 3: Cross multiply
   115,198.50x = 158,982.09 × 64,897.50
4. Step 4: Simplify right side
   115,198.50x = 10,317,540,185.78
5. Step 5: Solve for x
   x = 10,317,540,185.78/115,198.50
6. Step 6: Final answer
   x = 89,563.15