Finding the Fourth Proportional to 171,436.67, 257,196.04 and 71,541.28

Step by Step Solution

1. Step 1: Write the proportion equation
   171,436.67 : 257,196.04 = 71,541.28 : x
2. Step 2: Convert to fraction form
   171,436.67/257,196.04 = 71,541.28/x
3. Step 3: Cross multiply
   171,436.67x = 257,196.04 × 71,541.28
4. Step 4: Simplify right side
   171,436.67x = 18,400,133,090.69
5. Step 5: Solve for x
   x = 18,400,133,090.69/171,436.67
6. Step 6: Final answer
   x = 107,329.04