Finding the Fourth Proportional to 789,156.12, 1,089,397.71 and 462,423.63

Step by Step Solution

1. Step 1: Write the proportion equation
   789,156.12 : 1,089,397.71 = 462,423.63 : x
2. Step 2: Convert to fraction form
   789,156.12/1,089,397.71 = 462,423.63/x
3. Step 3: Cross multiply
   789,156.12x = 1,089,397.71 × 462,423.63
4. Step 4: Simplify right side
   789,156.12x = 503,763,243,571.89
5. Step 5: Solve for x
   x = 503,763,243,571.89/789,156.12
6. Step 6: Final answer
   x = 638,356.89