Finding the Fourth Proportional to 86,537.42, 117,819.64 and 86,270.86

Step by Step Solution

1. Step 1: Write the proportion equation
   86,537.42 : 117,819.64 = 86,270.86 : x
2. Step 2: Convert to fraction form
   86,537.42/117,819.64 = 86,270.86/x
3. Step 3: Cross multiply
   86,537.42x = 117,819.64 × 86,270.86
4. Step 4: Simplify right side
   86,537.42x = 10,164,401,667.69
5. Step 5: Solve for x
   x = 10,164,401,667.69/86,537.42
6. Step 6: Final answer
   x = 117,456.72