Finding the Fourth Proportional to 118,608.48, 163,683.79 and 64,893.50

Step by Step Solution

1. Step 1: Write the proportion equation
   118,608.48 : 163,683.79 = 64,893.50 : x
2. Step 2: Convert to fraction form
   118,608.48/163,683.79 = 64,893.50/x
3. Step 3: Cross multiply
   118,608.48x = 163,683.79 × 64,893.50
4. Step 4: Simplify right side
   118,608.48x = 10,622,013,045.71
5. Step 5: Solve for x
   x = 10,622,013,045.71/118,608.48
6. Step 6: Final answer
   x = 89,555.26