Finding the Fourth Proportional to 112,662.69, 155,482.02 and 64,919.13

Step by Step Solution

1. Step 1: Write the proportion equation
   112,662.69 : 155,482.02 = 64,919.13 : x
2. Step 2: Convert to fraction form
   112,662.69/155,482.02 = 64,919.13/x
3. Step 3: Cross multiply
   112,662.69x = 155,482.02 × 64,919.13
4. Step 4: Simplify right side
   112,662.69x = 10,093,757,469.04
5. Step 5: Solve for x
   x = 10,093,757,469.04/112,662.69
6. Step 6: Final answer
   x = 89,592.73