Finding the Fourth Proportional to 112,569.30, 155,297.43 and 64,812.51

Step by Step Solution

1. Step 1: Write the proportion equation
   112,569.30 : 155,297.43 = 64,812.51 : x
2. Step 2: Convert to fraction form
   112,569.30/155,297.43 = 64,812.51/x
3. Step 3: Cross multiply
   112,569.30x = 155,297.43 × 64,812.51
4. Step 4: Simplify right side
   112,569.30x = 10,065,216,234.85
5. Step 5: Solve for x
   x = 10,065,216,234.85/112,569.30
6. Step 6: Final answer
   x = 89,413.51