Finding the Fourth Proportional to 112,895.46, 155,809.18 and 65,147.78

Step by Step Solution

1. Step 1: Write the proportion equation
   112,895.46 : 155,809.18 = 65,147.78 : x
2. Step 2: Convert to fraction form
   112,895.46/155,809.18 = 65,147.78/x
3. Step 3: Cross multiply
   112,895.46x = 155,809.18 × 65,147.78
4. Step 4: Simplify right side
   112,895.46x = 10,150,622,180.62
5. Step 5: Solve for x
   x = 10,150,622,180.62/112,895.46
6. Step 6: Final answer
   x = 89,911.70