Finding the Fourth Proportional to 171,540.83, 257,336.06 and 64,895.87

Step by Step Solution

1. Step 1: Write the proportion equation
   171,540.83 : 257,336.06 = 64,895.87 : x
2. Step 2: Convert to fraction form
   171,540.83/257,336.06 = 64,895.87/x
3. Step 3: Cross multiply
   171,540.83x = 257,336.06 × 64,895.87
4. Step 4: Simplify right side
   171,540.83x = 16,700,047,171.59
5. Step 5: Solve for x
   x = 16,700,047,171.59/171,540.83
6. Step 6: Final answer
   x = 97,353.19