Finding the Fourth Proportional to 154,002.72, 212,513.76 and 89,466.24

Step by Step Solution

1. Step 1: Write the proportion equation
   154,002.72 : 212,513.76 = 89,466.24 : x
2. Step 2: Convert to fraction form
   154,002.72/212,513.76 = 89,466.24/x
3. Step 3: Cross multiply
   154,002.72x = 212,513.76 × 89,466.24
4. Step 4: Simplify right side
   154,002.72x = 19,012,807,055.46
5. Step 5: Solve for x
   x = 19,012,807,055.46/154,002.72
6. Step 6: Final answer
   x = 123,457.61