Finding the Fourth Proportional to 72,289.68, 99,747.89 and 45,413.16

Step by Step Solution

1. Step 1: Write the proportion equation
   72,289.68 : 99,747.89 = 45,413.16 : x
2. Step 2: Convert to fraction form
   72,289.68/99,747.89 = 45,413.16/x
3. Step 3: Cross multiply
   72,289.68x = 99,747.89 × 45,413.16
4. Step 4: Simplify right side
   72,289.68x = 4,529,866,162.43
5. Step 5: Solve for x
   x = 4,529,866,162.43/72,289.68
6. Step 6: Final answer
   x = 62,662.70