Finding the Fourth Proportional to 799,499.99, 1,199,118.61 and 287,059.04

Step by Step Solution

1. Step 1: Write the proportion equation
   799,499.99 : 1,199,118.61 = 287,059.04 : x
2. Step 2: Convert to fraction form
   799,499.99/1,199,118.61 = 287,059.04/x
3. Step 3: Cross multiply
   799,499.99x = 1,199,118.61 × 287,059.04
4. Step 4: Simplify right side
   799,499.99x = 344,217,836,160.66
5. Step 5: Solve for x
   x = 344,217,836,160.66/799,499.99
6. Step 6: Final answer
   x = 430,541.39