Finding the Fourth Proportional to 118,808.72, 163,955.92 and 65,097.12

Step by Step Solution

1. Step 1: Write the proportion equation
   118,808.72 : 163,955.92 = 65,097.12 : x
2. Step 2: Convert to fraction form
   118,808.72/163,955.92 = 65,097.12/x
3. Step 3: Cross multiply
   118,808.72x = 163,955.92 × 65,097.12
4. Step 4: Simplify right side
   118,808.72x = 10,673,058,198.95
5. Step 5: Solve for x
   x = 10,673,058,198.95/118,808.72
6. Step 6: Final answer
   x = 89,833.96