Finding the Fourth Proportional to 119,139.54, 164,413.70 and 65,425.68

Step by Step Solution

1. Step 1: Write the proportion equation
   119,139.54 : 164,413.70 = 65,425.68 : x
2. Step 2: Convert to fraction form
   119,139.54/164,413.70 = 65,425.68/x
3. Step 3: Cross multiply
   119,139.54x = 164,413.70 × 65,425.68
4. Step 4: Simplify right side
   119,139.54x = 10,756,878,123.82
5. Step 5: Solve for x
   x = 10,756,878,123.82/119,139.54
6. Step 6: Final answer
   x = 90,288.06