Finding the Fourth Proportional to 117,961.50, 162,786.87 and 64,969.50

Step by Step Solution

1. Step 1: Write the proportion equation
   117,961.50 : 162,786.87 = 64,969.50 : x
2. Step 2: Convert to fraction form
   117,961.50/162,786.87 = 64,969.50/x
3. Step 3: Cross multiply
   117,961.50x = 162,786.87 × 64,969.50
4. Step 4: Simplify right side
   117,961.50x = 10,576,181,550.47
5. Step 5: Solve for x
   x = 10,576,181,550.47/117,961.50
6. Step 6: Final answer
   x = 89,657.91