Finding the Fourth Proportional to 112,413.36, 155,136.32 and 64,673.88

Step by Step Solution

1. Step 1: Write the proportion equation
   112,413.36 : 155,136.32 = 64,673.88 : x
2. Step 2: Convert to fraction form
   112,413.36/155,136.32 = 64,673.88/x
3. Step 3: Cross multiply
   112,413.36x = 155,136.32 × 64,673.88
4. Step 4: Simplify right side
   112,413.36x = 10,033,267,743.32
5. Step 5: Solve for x
   x = 10,033,267,743.32/112,413.36
6. Step 6: Final answer
   x = 89,253.34