Finding the Fourth Proportional to 171,456.76, 257,112.84 and 64,822.72

Step by Step Solution

1. Step 1: Write the proportion equation
   171,456.76 : 257,112.84 = 64,822.72 : x
2. Step 2: Convert to fraction form
   171,456.76/257,112.84 = 64,822.72/x
3. Step 3: Cross multiply
   171,456.76x = 257,112.84 × 64,822.72
4. Step 4: Simplify right side
   171,456.76x = 16,666,753,635.72
5. Step 5: Solve for x
   x = 16,666,753,635.72/171,456.76
6. Step 6: Final answer
   x = 97,206.75