Finding the Fourth Proportional to 119,128.27, 164,398.94 and 65,418.25

Step by Step Solution

1. Step 1: Write the proportion equation
   119,128.27 : 164,398.94 = 65,418.25 : x
2. Step 2: Convert to fraction form
   119,128.27/164,398.94 = 65,418.25/x
3. Step 3: Cross multiply
   119,128.27x = 164,398.94 × 65,418.25
4. Step 4: Simplify right side
   119,128.27x = 10,754,690,956.66
5. Step 5: Solve for x
   x = 10,754,690,956.66/119,128.27
6. Step 6: Final answer
   x = 90,278.24