Finding the Fourth Proportional to 78,804.14, 108,673.85 and 53,020.78

Step by Step Solution

1. Step 1: Write the proportion equation
   78,804.14 : 108,673.85 = 53,020.78 : x
2. Step 2: Convert to fraction form
   78,804.14/108,673.85 = 53,020.78/x
3. Step 3: Cross multiply
   78,804.14x = 108,673.85 × 53,020.78
4. Step 4: Simplify right side
   78,804.14x = 5,761,972,153.47
5. Step 5: Solve for x
   x = 5,761,972,153.47/78,804.14
6. Step 6: Final answer
   x = 73,117.63