Finding the Fourth Proportional to 99,017.93, 136,413.72 and 81,007.97

Step by Step Solution

1. Step 1: Write the proportion equation
   99,017.93 : 136,413.72 = 81,007.97 : x
2. Step 2: Convert to fraction form
   99,017.93/136,413.72 = 81,007.97/x
3. Step 3: Cross multiply
   99,017.93x = 136,413.72 × 81,007.97
4. Step 4: Simplify right side
   99,017.93x = 11,050,598,537.35
5. Step 5: Solve for x
   x = 11,050,598,537.35/99,017.93
6. Step 6: Final answer
   x = 111,602.00