Finding the Fourth Proportional to 721,019.53, 994,706.41 and 415,022.69

Step by Step Solution

1. Step 1: Write the proportion equation
   721,019.53 : 994,706.41 = 415,022.69 : x
2. Step 2: Convert to fraction form
   721,019.53/994,706.41 = 415,022.69/x
3. Step 3: Cross multiply
   721,019.53x = 994,706.41 × 415,022.69
4. Step 4: Simplify right side
   721,019.53x = 412,825,728,421.47
5. Step 5: Solve for x
   x = 412,825,728,421.47/721,019.53
6. Step 6: Final answer
   x = 572,558.32