Finding the Fourth Proportional to 171,515.72, 257,298.48 and 53,196.59

Step by Step Solution

1. Step 1: Write the proportion equation
   171,515.72 : 257,298.48 = 53,196.59 : x
2. Step 2: Convert to fraction form
   171,515.72/257,298.48 = 53,196.59/x
3. Step 3: Cross multiply
   171,515.72x = 257,298.48 × 53,196.59
4. Step 4: Simplify right side
   171,515.72x = 13,687,400,461.69
5. Step 5: Solve for x
   x = 13,687,400,461.69/171,515.72
6. Step 6: Final answer
   x = 79,802.60