Finding the Fourth Proportional to 107,845.82, 148,784.78 and 72,059.20

Step by Step Solution

1. Step 1: Write the proportion equation
   107,845.82 : 148,784.78 = 72,059.20 : x
2. Step 2: Convert to fraction form
   107,845.82/148,784.78 = 72,059.20/x
3. Step 3: Cross multiply
   107,845.82x = 148,784.78 × 72,059.20
4. Step 4: Simplify right side
   107,845.82x = 10,721,312,218.98
5. Step 5: Solve for x
   x = 10,721,312,218.98/107,845.82
6. Step 6: Final answer
   x = 99,413.33