Finding the Fourth Proportional to 139,413.14, 209,002.14 and 60,467.90

Step by Step Solution

1. Step 1: Write the proportion equation
   139,413.14 : 209,002.14 = 60,467.90 : x
2. Step 2: Convert to fraction form
   139,413.14/209,002.14 = 60,467.90/x
3. Step 3: Cross multiply
   139,413.14x = 209,002.14 × 60,467.90
4. Step 4: Simplify right side
   139,413.14x = 12,637,920,501.31
5. Step 5: Solve for x
   x = 12,637,920,501.31/139,413.14
6. Step 6: Final answer
   x = 90,650.86