Finding the Fourth Proportional to 76,777.89, 105,913.01 and 52,863.05

Step by Step Solution

1. Step 1: Write the proportion equation
   76,777.89 : 105,913.01 = 52,863.05 : x
2. Step 2: Convert to fraction form
   76,777.89/105,913.01 = 52,863.05/x
3. Step 3: Cross multiply
   76,777.89x = 105,913.01 × 52,863.05
4. Step 4: Simplify right side
   76,777.89x = 5,598,883,949.40
5. Step 5: Solve for x
   x = 5,598,883,949.40/76,777.89
6. Step 6: Final answer
   x = 72,923.13