Finding the Fourth Proportional to 117,641.50, 162,345.27 and 64,649.50

Step by Step Solution

1. Step 1: Write the proportion equation
   117,641.50 : 162,345.27 = 64,649.50 : x
2. Step 2: Convert to fraction form
   117,641.50/162,345.27 = 64,649.50/x
3. Step 3: Cross multiply
   117,641.50x = 162,345.27 × 64,649.50
4. Step 4: Simplify right side
   117,641.50x = 10,495,540,532.87
5. Step 5: Solve for x
   x = 10,495,540,532.87/117,641.50
6. Step 6: Final answer
   x = 89,216.31