Finding the Fourth Proportional to 112,144, 154,760.96 and 72,469.12

Step by Step Solution

1. Step 1: Write the proportion equation
   112,144 : 154,760.96 = 72,469.12 : x
2. Step 2: Convert to fraction form
   112,144/154,760.96 = 72,469.12/x
3. Step 3: Cross multiply
   112,144x = 154,760.96 × 72,469.12
4. Step 4: Simplify right side
   112,144x = 11,215,390,581.56
5. Step 5: Solve for x
   x = 11,215,390,581.56/112,144
6. Step 6: Final answer
   x = 100,008.83