Finding the Fourth Proportional to 276,817.72, 414,964.12 and 89,698

Step by Step Solution

1. Step 1: Write the proportion equation
   276,817.72 : 414,964.12 = 89,698 : x
2. Step 2: Convert to fraction form
   276,817.72/414,964.12 = 89,698/x
3. Step 3: Cross multiply
   276,817.72x = 414,964.12 × 89,698
4. Step 4: Simplify right side
   276,817.72x = 37,221,451,635.76
5. Step 5: Solve for x
   x = 37,221,451,635.76/276,817.72
6. Step 6: Final answer
   x = 134,461.95