Finding the Fourth Proportional to 389,597.99, 584,413.65 and 152,991.86

Step by Step Solution

1. Step 1: Write the proportion equation
   389,597.99 : 584,413.65 = 152,991.86 : x
2. Step 2: Convert to fraction form
   389,597.99/584,413.65 = 152,991.86/x
3. Step 3: Cross multiply
   389,597.99x = 584,413.65 × 152,991.86
4. Step 4: Simplify right side
   389,597.99x = 89,410,528,400.82
5. Step 5: Solve for x
   x = 89,410,528,400.82/389,597.99
6. Step 6: Final answer
   x = 229,494.33