Finding the Fourth Proportional to 119,570.36, 165,003.72 and 65,121.30

Step by Step Solution

1. Step 1: Write the proportion equation
   119,570.36 : 165,003.72 = 65,121.30 : x
2. Step 2: Convert to fraction form
   119,570.36/165,003.72 = 65,121.30/x
3. Step 3: Cross multiply
   119,570.36x = 165,003.72 × 65,121.30
4. Step 4: Simplify right side
   119,570.36x = 10,745,255,926.22
5. Step 5: Solve for x
   x = 10,745,255,926.22/119,570.36
6. Step 6: Final answer
   x = 89,865.55