Finding the Fourth Proportional to 112,859.15, 155,758.57 and 64,468.69

Step by Step Solution

1. Step 1: Write the proportion equation
   112,859.15 : 155,758.57 = 64,468.69 : x
2. Step 2: Convert to fraction form
   112,859.15/155,758.57 = 64,468.69/x
3. Step 3: Cross multiply
   112,859.15x = 155,758.57 × 64,468.69
4. Step 4: Simplify right side
   112,859.15x = 10,041,550,413.61
5. Step 5: Solve for x
   x = 10,041,550,413.61/112,859.15
6. Step 6: Final answer
   x = 88,974.18