Finding the Fourth Proportional to 452,500.94, 678,139.04 and 171,865.10

Step by Step Solution

1. Step 1: Write the proportion equation
   452,500.94 : 678,139.04 = 171,865.10 : x
2. Step 2: Convert to fraction form
   452,500.94/678,139.04 = 171,865.10/x
3. Step 3: Cross multiply
   452,500.94x = 678,139.04 × 171,865.10
4. Step 4: Simplify right side
   452,500.94x = 116,548,429,673.48
5. Step 5: Solve for x
   x = 116,548,429,673.48/452,500.94
6. Step 6: Final answer
   x = 257,565.06