Finding the Fourth Proportional to 78,647.89, 108,557.81 and 53,511.97

Step by Step Solution

1. Step 1: Write the proportion equation
   78,647.89 : 108,557.81 = 53,511.97 : x
2. Step 2: Convert to fraction form
   78,647.89/108,557.81 = 53,511.97/x
3. Step 3: Cross multiply
   78,647.89x = 108,557.81 × 53,511.97
4. Step 4: Simplify right side
   78,647.89x = 5,809,142,004.43
5. Step 5: Solve for x
   x = 5,809,142,004.43/78,647.89
6. Step 6: Final answer
   x = 73,862.66