Finding the Fourth Proportional to 78,804.89, 108,674.89 and 53,021.53

Step by Step Solution

1. Step 1: Write the proportion equation
   78,804.89 : 108,674.89 = 53,021.53 : x
2. Step 2: Convert to fraction form
   78,804.89/108,674.89 = 53,021.53/x
3. Step 3: Cross multiply
   78,804.89x = 108,674.89 × 53,021.53
4. Step 4: Simplify right side
   78,804.89x = 5,762,108,536.14
5. Step 5: Solve for x
   x = 5,762,108,536.14/78,804.89
6. Step 6: Final answer
   x = 73,118.67