Finding the Fourth Proportional to 309,861, 427,608.18 and 175,725

Step by Step Solution

1. Step 1: Write the proportion equation
   309,861 : 427,608.18 = 175,725 : x
2. Step 2: Convert to fraction form
   309,861/427,608.18 = 175,725/x
3. Step 3: Cross multiply
   309,861x = 427,608.18 × 175,725
4. Step 4: Simplify right side
   309,861x = 75,141,447,430.50
5. Step 5: Solve for x
   x = 75,141,447,430.50/309,861
6. Step 6: Final answer
   x = 242,500.50