Finding the Fourth Proportional to 171,945.77, 257,801.00 and 87,542.60

Step by Step Solution

1. Step 1: Write the proportion equation
   171,945.77 : 257,801.00 = 87,542.60 : x
2. Step 2: Convert to fraction form
   171,945.77/257,801.00 = 87,542.60/x
3. Step 3: Cross multiply
   171,945.77x = 257,801.00 × 87,542.60
4. Step 4: Simplify right side
   171,945.77x = 22,568,568,095.88
5. Step 5: Solve for x
   x = 22,568,568,095.88/171,945.77
6. Step 6: Final answer
   x = 131,253.99