Finding the Fourth Proportional to 119,699.61, 165,186.61 and 65,986.55

Step by Step Solution

1. Step 1: Write the proportion equation
   119,699.61 : 165,186.61 = 65,986.55 : x
2. Step 2: Convert to fraction form
   119,699.61/165,186.61 = 65,986.55/x
3. Step 3: Cross multiply
   119,699.61x = 165,186.61 × 65,986.55
4. Step 4: Simplify right side
   119,699.61x = 10,900,093,674.16
5. Step 5: Solve for x
   x = 10,900,093,674.16/119,699.61
6. Step 6: Final answer
   x = 91,062.07