Finding the Fourth Proportional to 118,612.30, 163,683.50 and 64,896.54

Step by Step Solution

1. Step 1: Write the proportion equation
   118,612.30 : 163,683.50 = 64,896.54 : x
2. Step 2: Convert to fraction form
   118,612.30/163,683.50 = 64,896.54/x
3. Step 3: Cross multiply
   118,612.30x = 163,683.50 × 64,896.54
4. Step 4: Simplify right side
   118,612.30x = 10,622,492,805.09
5. Step 5: Solve for x
   x = 10,622,492,805.09/118,612.30
6. Step 6: Final answer
   x = 89,556.42