Finding the Fourth Proportional to 82,787.72, 114,380.66 and 57,749

Step by Step Solution

1. Step 1: Write the proportion equation
   82,787.72 : 114,380.66 = 57,749 : x
2. Step 2: Convert to fraction form
   82,787.72/114,380.66 = 57,749/x
3. Step 3: Cross multiply
   82,787.72x = 114,380.66 × 57,749
4. Step 4: Simplify right side
   82,787.72x = 6,605,368,734.34
5. Step 5: Solve for x
   x = 6,605,368,734.34/82,787.72
6. Step 6: Final answer
   x = 79,786.82