Finding the Fourth Proportional to 119,389.37, 164,757.71 and 65,678.47

Step by Step Solution

1. Step 1: Write the proportion equation
   119,389.37 : 164,757.71 = 65,678.47 : x
2. Step 2: Convert to fraction form
   119,389.37/164,757.71 = 65,678.47/x
3. Step 3: Cross multiply
   119,389.37x = 164,757.71 × 65,678.47
4. Step 4: Simplify right side
   119,389.37x = 10,821,034,065.81
5. Step 5: Solve for x
   x = 10,821,034,065.81/119,389.37
6. Step 6: Final answer
   x = 90,636.50