Finding the Fourth Proportional to 116,276.96, 160,460.16 and 65,290.09

Step by Step Solution

1. Step 1: Write the proportion equation
   116,276.96 : 160,460.16 = 65,290.09 : x
2. Step 2: Convert to fraction form
   116,276.96/160,460.16 = 65,290.09/x
3. Step 3: Cross multiply
   116,276.96x = 160,460.16 × 65,290.09
4. Step 4: Simplify right side
   116,276.96x = 10,476,458,488.39
5. Step 5: Solve for x
   x = 10,476,458,488.39/116,276.96
6. Step 6: Final answer
   x = 90,099.18