Finding the Fourth Proportional to 85,759.93, 127,601.88 and 83,617.21

Step by Step Solution

1. Step 1: Write the proportion equation
   85,759.93 : 127,601.88 = 83,617.21 : x
2. Step 2: Convert to fraction form
   85,759.93/127,601.88 = 83,617.21/x
3. Step 3: Cross multiply
   85,759.93x = 127,601.88 × 83,617.21
4. Step 4: Simplify right side
   85,759.93x = 10,669,713,196.35
5. Step 5: Solve for x
   x = 10,669,713,196.35/85,759.93
6. Step 6: Final answer
   x = 124,413.73