Finding the Fourth Proportional to 116,298.26, 160,495.47 and 65,319.96

Step by Step Solution

1. Step 1: Write the proportion equation
   116,298.26 : 160,495.47 = 65,319.96 : x
2. Step 2: Convert to fraction form
   116,298.26/160,495.47 = 65,319.96/x
3. Step 3: Cross multiply
   116,298.26x = 160,495.47 × 65,319.96
4. Step 4: Simplify right side
   116,298.26x = 10,483,557,680.58
5. Step 5: Solve for x
   x = 10,483,557,680.58/116,298.26
6. Step 6: Final answer
   x = 90,143.72