Finding the Fourth Proportional to 78,864.96, 108,807.52 and 52,020.80

Step by Step Solution

1. Step 1: Write the proportion equation
   78,864.96 : 108,807.52 = 52,020.80 : x
2. Step 2: Convert to fraction form
   78,864.96/108,807.52 = 52,020.80/x
3. Step 3: Cross multiply
   78,864.96x = 108,807.52 × 52,020.80
4. Step 4: Simplify right side
   78,864.96x = 5,660,254,236.42
5. Step 5: Solve for x
   x = 5,660,254,236.42/78,864.96
6. Step 6: Final answer
   x = 71,771.47