Finding the Fourth Proportional to 99,017.94, 136,413.72 and 81,007.98

Step by Step Solution

1. Step 1: Write the proportion equation
   99,017.94 : 136,413.72 = 81,007.98 : x
2. Step 2: Convert to fraction form
   99,017.94/136,413.72 = 81,007.98/x
3. Step 3: Cross multiply
   99,017.94x = 136,413.72 × 81,007.98
4. Step 4: Simplify right side
   99,017.94x = 11,050,599,901.49
5. Step 5: Solve for x
   x = 11,050,599,901.49/99,017.94
6. Step 6: Final answer
   x = 111,602.00