Finding the Fourth Proportional to 238,959.72, 358,478.46 and 89,252.28

Step by Step Solution

1. Step 1: Write the proportion equation
   238,959.72 : 358,478.46 = 89,252.28 : x
2. Step 2: Convert to fraction form
   238,959.72/358,478.46 = 89,252.28/x
3. Step 3: Cross multiply
   238,959.72x = 358,478.46 × 89,252.28
4. Step 4: Simplify right side
   238,959.72x = 31,995,019,885.89
5. Step 5: Solve for x
   x = 31,995,019,885.89/238,959.72
6. Step 6: Final answer
   x = 133,892.94