Finding the Fourth Proportional to 278,413.57, 384,210.72 and 151,089.17

Step by Step Solution

1. Step 1: Write the proportion equation
   278,413.57 : 384,210.72 = 151,089.17 : x
2. Step 2: Convert to fraction form
   278,413.57/384,210.72 = 151,089.17/x
3. Step 3: Cross multiply
   278,413.57x = 384,210.72 × 151,089.17
4. Step 4: Simplify right side
   278,413.57x = 58,050,076,868.85
5. Step 5: Solve for x
   x = 58,050,076,868.85/278,413.57
6. Step 6: Final answer
   x = 208,503.04