Finding the Fourth Proportional to 119,153.71, 164,434.98 and 65,439.89

Step by Step Solution

1. Step 1: Write the proportion equation
   119,153.71 : 164,434.98 = 65,439.89 : x
2. Step 2: Convert to fraction form
   119,153.71/164,434.98 = 65,439.89/x
3. Step 3: Cross multiply
   119,153.71x = 164,434.98 × 65,439.89
4. Step 4: Simplify right side
   119,153.71x = 10,760,606,181.18
5. Step 5: Solve for x
   x = 10,760,606,181.18/119,153.71
6. Step 6: Final answer
   x = 90,308.61