Finding the Fourth Proportional to 117,196.98, 161,720.24 and 65,504.40

Step by Step Solution

1. Step 1: Write the proportion equation
   117,196.98 : 161,720.24 = 65,504.40 : x
2. Step 2: Convert to fraction form
   117,196.98/161,720.24 = 65,504.40/x
3. Step 3: Cross multiply
   117,196.98x = 161,720.24 × 65,504.40
4. Step 4: Simplify right side
   117,196.98x = 10,593,386,480.45
5. Step 5: Solve for x
   x = 10,593,386,480.45/117,196.98
6. Step 6: Final answer
   x = 90,389.59