Finding the Fourth Proportional to 154,022.72, 212,541.36 and 89,486.24

Step by Step Solution

1. Step 1: Write the proportion equation
   154,022.72 : 212,541.36 = 89,486.24 : x
2. Step 2: Convert to fraction form
   154,022.72/212,541.36 = 89,486.24/x
3. Step 3: Cross multiply
   154,022.72x = 212,541.36 × 89,486.24
4. Step 4: Simplify right side
   154,022.72x = 19,019,527,150.89
5. Step 5: Solve for x
   x = 19,019,527,150.89/154,022.72
6. Step 6: Final answer
   x = 123,485.20