Finding the Fourth Proportional to 78,389.37, 108,266.52 and 52,851.89

Step by Step Solution

1. Step 1: Write the proportion equation
   78,389.37 : 108,266.52 = 52,851.89 : x
2. Step 2: Convert to fraction form
   78,389.37/108,266.52 = 52,851.89/x
3. Step 3: Cross multiply
   78,389.37x = 108,266.52 × 52,851.89
4. Step 4: Simplify right side
   78,389.37x = 5,722,090,674.58
5. Step 5: Solve for x
   x = 5,722,090,674.58/78,389.37
6. Step 6: Final answer
   x = 72,995.75