Finding the Fourth Proportional to 53,841.72, 80,775.60 and 16,905.72

Step by Step Solution

1. Step 1: Write the proportion equation
   53,841.72 : 80,775.60 = 16,905.72 : x
2. Step 2: Convert to fraction form
   53,841.72/80,775.60 = 16,905.72/x
3. Step 3: Cross multiply
   53,841.72x = 80,775.60 × 16,905.72
4. Step 4: Simplify right side
   53,841.72x = 1,365,569,676.43
5. Step 5: Solve for x
   x = 1,365,569,676.43/53,841.72
6. Step 6: Final answer
   x = 25,362.67