Finding the Fourth Proportional to 509,870.16, 703,629.72 and 280,452.24

Step by Step Solution

1. Step 1: Write the proportion equation
   509,870.16 : 703,629.72 = 280,452.24 : x
2. Step 2: Convert to fraction form
   509,870.16/703,629.72 = 280,452.24/x
3. Step 3: Cross multiply
   509,870.16x = 703,629.72 × 280,452.24
4. Step 4: Simplify right side
   509,870.16x = 197,334,531,104.57
5. Step 5: Solve for x
   x = 197,334,531,104.57/509,870.16
6. Step 6: Final answer
   x = 387,028.99