Finding the Fourth Proportional to 196,072.50, 294,152.50 and 71,413.50

Step by Step Solution

1. Step 1: Write the proportion equation
   196,072.50 : 294,152.50 = 71,413.50 : x
2. Step 2: Convert to fraction form
   196,072.50/294,152.50 = 71,413.50/x
3. Step 3: Cross multiply
   196,072.50x = 294,152.50 × 71,413.50
4. Step 4: Simplify right side
   196,072.50x = 21,006,459,558.75
5. Step 5: Solve for x
   x = 21,006,459,558.75/196,072.50
6. Step 6: Final answer
   x = 107,136.18