Finding the Fourth Proportional to 488,404.98, 673,628.24 and 427,870.53

Step by Step Solution

1. Step 1: Write the proportion equation
   488,404.98 : 673,628.24 = 427,870.53 : x
2. Step 2: Convert to fraction form
   488,404.98/673,628.24 = 427,870.53/x
3. Step 3: Cross multiply
   488,404.98x = 673,628.24 × 427,870.53
4. Step 4: Simplify right side
   488,404.98x = 288,225,668,238.40
5. Step 5: Solve for x
   x = 288,225,668,238.40/488,404.98
6. Step 6: Final answer
   x = 590,136.63