Finding the Fourth Proportional to 390,105.98, 584,992.81 and 153,282.53

Step by Step Solution

1. Step 1: Write the proportion equation
   390,105.98 : 584,992.81 = 153,282.53 : x
2. Step 2: Convert to fraction form
   390,105.98/584,992.81 = 153,282.53/x
3. Step 3: Cross multiply
   390,105.98x = 584,992.81 × 153,282.53
4. Step 4: Simplify right side
   390,105.98x = 89,669,177,948.61
5. Step 5: Solve for x
   x = 89,669,177,948.61/390,105.98
6. Step 6: Final answer
   x = 229,858.51