Finding the Fourth Proportional to 120,131.42, 165,782.01 and 65,683.76

Step by Step Solution

1. Step 1: Write the proportion equation
   120,131.42 : 165,782.01 = 65,683.76 : x
2. Step 2: Convert to fraction form
   120,131.42/165,782.01 = 65,683.76/x
3. Step 3: Cross multiply
   120,131.42x = 165,782.01 × 65,683.76
4. Step 4: Simplify right side
   120,131.42x = 10,889,185,757.16
5. Step 5: Solve for x
   x = 10,889,185,757.16/120,131.42
6. Step 6: Final answer
   x = 90,643.94