Finding the Fourth Proportional to 118,644.34, 163,727.00 and 64,928.28

Step by Step Solution

1. Step 1: Write the proportion equation
   118,644.34 : 163,727.00 = 64,928.28 : x
2. Step 2: Convert to fraction form
   118,644.34/163,727.00 = 64,928.28/x
3. Step 3: Cross multiply
   118,644.34x = 163,727.00 × 64,928.28
4. Step 4: Simplify right side
   118,644.34x = 10,630,511,804.42
5. Step 5: Solve for x
   x = 10,630,511,804.42/118,644.34
6. Step 6: Final answer
   x = 89,599.82