Finding the Fourth Proportional to 112,464.16, 155,205.25 and 64,717.70

Step by Step Solution

1. Step 1: Write the proportion equation
   112,464.16 : 155,205.25 = 64,717.70 : x
2. Step 2: Convert to fraction form
   112,464.16/155,205.25 = 64,717.70/x
3. Step 3: Cross multiply
   112,464.16x = 155,205.25 × 64,717.70
4. Step 4: Simplify right side
   112,464.16x = 10,044,525,870.10
5. Step 5: Solve for x
   x = 10,044,525,870.10/112,464.16
6. Step 6: Final answer
   x = 89,313.13