Finding the Fourth Proportional to 116,290.90, 160,479.38 and 65,304.04

Step by Step Solution

1. Step 1: Write the proportion equation
   116,290.90 : 160,479.38 = 65,304.04 : x
2. Step 2: Convert to fraction form
   116,290.90/160,479.38 = 65,304.04/x
3. Step 3: Cross multiply
   116,290.90x = 160,479.38 × 65,304.04
4. Step 4: Simplify right side
   116,290.90x = 10,479,951,850.70
5. Step 5: Solve for x
   x = 10,479,951,850.70/116,290.90
6. Step 6: Final answer
   x = 90,118.42