Finding the Fourth Proportional to 789,447.42, 1,089,436.68 and 426,870.42

Step by Step Solution

1. Step 1: Write the proportion equation
   789,447.42 : 1,089,436.68 = 426,870.42 : x
2. Step 2: Convert to fraction form
   789,447.42/1,089,436.68 = 426,870.42/x
3. Step 3: Cross multiply
   789,447.42x = 1,089,436.68 × 426,870.42
4. Step 4: Simplify right side
   789,447.42x = 465,048,285,573.47
5. Step 5: Solve for x
   x = 465,048,285,573.47/789,447.42
6. Step 6: Final answer
   x = 589,080.76