Finding the Fourth Proportional to 554,490.72, 831,788.46 and 155,131.56

Step by Step Solution

1. Step 1: Write the proportion equation
   554,490.72 : 831,788.46 = 155,131.56 : x
2. Step 2: Convert to fraction form
   554,490.72/831,788.46 = 155,131.56/x
3. Step 3: Cross multiply
   554,490.72x = 831,788.46 × 155,131.56
4. Step 4: Simplify right side
   554,490.72x = 129,036,641,389.80
5. Step 5: Solve for x
   x = 129,036,641,389.80/554,490.72
6. Step 6: Final answer
   x = 232,711.99