Finding the Fourth Proportional to 112,469.76, 155,208.42 and 64,722.24

Step by Step Solution

1. Step 1: Write the proportion equation
   112,469.76 : 155,208.42 = 64,722.24 : x
2. Step 2: Convert to fraction form
   112,469.76/155,208.42 = 64,722.24/x
3. Step 3: Cross multiply
   112,469.76x = 155,208.42 × 64,722.24
4. Step 4: Simplify right side
   112,469.76x = 10,045,436,609.26
5. Step 5: Solve for x
   x = 10,045,436,609.26/112,469.76
6. Step 6: Final answer
   x = 89,316.78