Finding the Fourth Proportional to 82,798.72, 114,395.84 and 57,760

Step by Step Solution

1. Step 1: Write the proportion equation
   82,798.72 : 114,395.84 = 57,760 : x
2. Step 2: Convert to fraction form
   82,798.72/114,395.84 = 57,760/x
3. Step 3: Cross multiply
   82,798.72x = 114,395.84 × 57,760
4. Step 4: Simplify right side
   82,798.72x = 6,607,503,718.40
5. Step 5: Solve for x
   x = 6,607,503,718.40/82,798.72
6. Step 6: Final answer
   x = 79,802.00