Finding the Fourth Proportional to 108,768.92, 163,146.78 and 64,676.25

Step by Step Solution

1. Step 1: Write the proportion equation
   108,768.92 : 163,146.78 = 64,676.25 : x
2. Step 2: Convert to fraction form
   108,768.92/163,146.78 = 64,676.25/x
3. Step 3: Cross multiply
   108,768.92x = 163,146.78 × 64,676.25
4. Step 4: Simplify right side
   108,768.92x = 10,551,721,929.98
5. Step 5: Solve for x
   x = 10,551,721,929.98/108,768.92
6. Step 6: Final answer
   x = 97,010.45