Finding the Fourth Proportional to 117,992, 162,828.96 and 65,000

Step by Step Solution

1. Step 1: Write the proportion equation
   117,992 : 162,828.96 = 65,000 : x
2. Step 2: Convert to fraction form
   117,992/162,828.96 = 65,000/x
3. Step 3: Cross multiply
   117,992x = 162,828.96 × 65,000
4. Step 4: Simplify right side
   117,992x = 10,583,882,400
5. Step 5: Solve for x
   x = 10,583,882,400/117,992
6. Step 6: Final answer
   x = 89,700