Finding the Fourth Proportional to 141,654.24, 212,413.59 and 82,506.78

Step by Step Solution

1. Step 1: Write the proportion equation
   141,654.24 : 212,413.59 = 82,506.78 : x
2. Step 2: Convert to fraction form
   141,654.24/212,413.59 = 82,506.78/x
3. Step 3: Cross multiply
   141,654.24x = 212,413.59 × 82,506.78
4. Step 4: Simplify right side
   141,654.24x = 17,525,561,339.14
5. Step 5: Solve for x
   x = 17,525,561,339.14/141,654.24
6. Step 6: Final answer
   x = 123,720.70