Finding the Fourth Proportional to 490,941.27, 736,404.50 and 220,878.69

Step by Step Solution

1. Step 1: Write the proportion equation
   490,941.27 : 736,404.50 = 220,878.69 : x
2. Step 2: Convert to fraction form
   490,941.27/736,404.50 = 220,878.69/x
3. Step 3: Cross multiply
   490,941.27x = 736,404.50 × 220,878.69
4. Step 4: Simplify right side
   490,941.27x = 162,656,060,165.71
5. Step 5: Solve for x
   x = 162,656,060,165.71/490,941.27
6. Step 6: Final answer
   x = 331,314.70