Finding the Fourth Proportional to 118,854.72, 164,020.14 and 65,140.20

Step by Step Solution

1. Step 1: Write the proportion equation
   118,854.72 : 164,020.14 = 65,140.20 : x
2. Step 2: Convert to fraction form
   118,854.72/164,020.14 = 65,140.20/x
3. Step 3: Cross multiply
   118,854.72x = 164,020.14 × 65,140.20
4. Step 4: Simplify right side
   118,854.72x = 10,684,304,723.63
5. Step 5: Solve for x
   x = 10,684,304,723.63/118,854.72
6. Step 6: Final answer
   x = 89,893.82