Finding the Fourth Proportional to 171,715.98, 257,617.71 and 53,388.30

Step by Step Solution

1. Step 1: Write the proportion equation
   171,715.98 : 257,617.71 = 53,388.30 : x
2. Step 2: Convert to fraction form
   171,715.98/257,617.71 = 53,388.30/x
3. Step 3: Cross multiply
   171,715.98x = 257,617.71 × 53,388.30
4. Step 4: Simplify right side
   171,715.98x = 13,753,771,586.79
5. Step 5: Solve for x
   x = 13,753,771,586.79/171,715.98
6. Step 6: Final answer
   x = 80,096.05