Finding the Fourth Proportional to 171,499.71, 257,278.50 and 59,149.88

Step by Step Solution

1. Step 1: Write the proportion equation
   171,499.71 : 257,278.50 = 59,149.88 : x
2. Step 2: Convert to fraction form
   171,499.71/257,278.50 = 59,149.88/x
3. Step 3: Cross multiply
   171,499.71x = 257,278.50 × 59,149.88
4. Step 4: Simplify right side
   171,499.71x = 15,217,990,819.44
5. Step 5: Solve for x
   x = 15,217,990,819.44/171,499.71
6. Step 6: Final answer
   x = 88,734.79