Finding the Fourth Proportional to 171,456.57, 257,090.90 and 53,095.05

Step by Step Solution

1. Step 1: Write the proportion equation
   171,456.57 : 257,090.90 = 53,095.05 : x
2. Step 2: Convert to fraction form
   171,456.57/257,090.90 = 53,095.05/x
3. Step 3: Cross multiply
   171,456.57x = 257,090.90 × 53,095.05
4. Step 4: Simplify right side
   171,456.57x = 13,650,253,924.57
5. Step 5: Solve for x
   x = 13,650,253,924.57/171,456.57
6. Step 6: Final answer
   x = 79,613.48