Finding the Fourth Proportional to 116,291.12, 160,482.84 and 65,986.16

Step by Step Solution

1. Step 1: Write the proportion equation
   116,291.12 : 160,482.84 = 65,986.16 : x
2. Step 2: Convert to fraction form
   116,291.12/160,482.84 = 65,986.16/x
3. Step 3: Cross multiply
   116,291.12x = 160,482.84 × 65,986.16
4. Step 4: Simplify right side
   116,291.12x = 10,589,646,357.49
5. Step 5: Solve for x
   x = 10,589,646,357.49/116,291.12
6. Step 6: Final answer
   x = 91,061.52