Finding the Fourth Proportional to 116,609.99, 160,919.82 and 65,622.65

Step by Step Solution

1. Step 1: Write the proportion equation
   116,609.99 : 160,919.82 = 65,622.65 : x
2. Step 2: Convert to fraction form
   116,609.99/160,919.82 = 65,622.65/x
3. Step 3: Cross multiply
   116,609.99x = 160,919.82 × 65,622.65
4. Step 4: Simplify right side
   116,609.99x = 10,559,984,221.32
5. Step 5: Solve for x
   x = 10,559,984,221.32/116,609.99
6. Step 6: Final answer
   x = 90,558.15