Finding the Fourth Proportional to 82,820.28, 114,262.88 and 54,156.72

Step by Step Solution

1. Step 1: Write the proportion equation
   82,820.28 : 114,262.88 = 54,156.72 : x
2. Step 2: Convert to fraction form
   82,820.28/114,262.88 = 54,156.72/x
3. Step 3: Cross multiply
   82,820.28x = 114,262.88 × 54,156.72
4. Step 4: Simplify right side
   82,820.28x = 6,188,102,798.55
5. Step 5: Solve for x
   x = 6,188,102,798.55/82,820.28
6. Step 6: Final answer
   x = 74,717.24