Finding the Fourth Proportional to 789,642.29, 1,089,706.41 and 427,066.05

Step by Step Solution

1. Step 1: Write the proportion equation
   789,642.29 : 1,089,706.41 = 427,066.05 : x
2. Step 2: Convert to fraction form
   789,642.29/1,089,706.41 = 427,066.05/x
3. Step 3: Cross multiply
   789,642.29x = 1,089,706.41 × 427,066.05
4. Step 4: Simplify right side
   789,642.29x = 465,376,617,113.78
5. Step 5: Solve for x
   x = 465,376,617,113.78/789,642.29
6. Step 6: Final answer
   x = 589,351.18