Finding the Fourth Proportional to 117,621.50, 162,317.67 and 64,629.50

Step by Step Solution

1. Step 1: Write the proportion equation
   117,621.50 : 162,317.67 = 64,629.50 : x
2. Step 2: Convert to fraction form
   117,621.50/162,317.67 = 64,629.50/x
3. Step 3: Cross multiply
   117,621.50x = 162,317.67 × 64,629.50
4. Step 4: Simplify right side
   117,621.50x = 10,490,509,853.27
5. Step 5: Solve for x
   x = 10,490,509,853.27/117,621.50
6. Step 6: Final answer
   x = 89,188.71