Finding the Fourth Proportional to 261,672.69, 392,413.86 and 111,923.94

Step by Step Solution

1. Step 1: Write the proportion equation
   261,672.69 : 392,413.86 = 111,923.94 : x
2. Step 2: Convert to fraction form
   261,672.69/392,413.86 = 111,923.94/x
3. Step 3: Cross multiply
   261,672.69x = 392,413.86 × 111,923.94
4. Step 4: Simplify right side
   261,672.69x = 43,920,505,321.81
5. Step 5: Solve for x
   x = 43,920,505,321.81/261,672.69
6. Step 6: Final answer
   x = 167,845.20