Finding the Fourth Proportional to 86,242.32, 118,982.48 and 86,109.32

Step by Step Solution

1. Step 1: Write the proportion equation
   86,242.32 : 118,982.48 = 86,109.32 : x
2. Step 2: Convert to fraction form
   86,242.32/118,982.48 = 86,109.32/x
3. Step 3: Cross multiply
   86,242.32x = 118,982.48 × 86,109.32
4. Step 4: Simplify right side
   86,242.32x = 10,245,499,742.16
5. Step 5: Solve for x
   x = 10,245,499,742.16/86,242.32
6. Step 6: Final answer
   x = 118,798.98