Finding the Fourth Proportional to 285,061.58, 426,740.49 and 172,401

Step by Step Solution

1. Step 1: Write the proportion equation
   285,061.58 : 426,740.49 = 172,401 : x
2. Step 2: Convert to fraction form
   285,061.58/426,740.49 = 172,401/x
3. Step 3: Cross multiply
   285,061.58x = 426,740.49 × 172,401
4. Step 4: Simplify right side
   285,061.58x = 73,570,487,216.49
5. Step 5: Solve for x
   x = 73,570,487,216.49/285,061.58
6. Step 6: Final answer
   x = 258,086.30