Finding the Fourth Proportional to 109,683.30, 164,196.90 and 65,287.20

Step by Step Solution

1. Step 1: Write the proportion equation
   109,683.30 : 164,196.90 = 65,287.20 : x
2. Step 2: Convert to fraction form
   109,683.30/164,196.90 = 65,287.20/x
3. Step 3: Cross multiply
   109,683.30x = 164,196.90 × 65,287.20
4. Step 4: Simplify right side
   109,683.30x = 10,719,955,849.68
5. Step 5: Solve for x
   x = 10,719,955,849.68/109,683.30
6. Step 6: Final answer
   x = 97,735.53