Finding the Fourth Proportional to 326,016.70, 488,972.58 and 89,304.04

Step by Step Solution

1. Step 1: Write the proportion equation
   326,016.70 : 488,972.58 = 89,304.04 : x
2. Step 2: Convert to fraction form
   326,016.70/488,972.58 = 89,304.04/x
3. Step 3: Cross multiply
   326,016.70x = 488,972.58 × 89,304.04
4. Step 4: Simplify right side
   326,016.70x = 43,667,226,843.22
5. Step 5: Solve for x
   x = 43,667,226,843.22/326,016.70
6. Step 6: Final answer
   x = 133,941.69