Finding the Fourth Proportional to 171,453.76, 257,108.34 and 64,819.72

Step by Step Solution

1. Step 1: Write the proportion equation
   171,453.76 : 257,108.34 = 64,819.72 : x
2. Step 2: Convert to fraction form
   171,453.76/257,108.34 = 64,819.72/x
3. Step 3: Cross multiply
   171,453.76x = 257,108.34 × 64,819.72
4. Step 4: Simplify right side
   171,453.76x = 16,665,690,608.46
5. Step 5: Solve for x
   x = 16,665,690,608.46/171,453.76
6. Step 6: Final answer
   x = 97,202.25