Finding the Fourth Proportional to 82,140.84, 113,266.83 and 64,882.87

Step by Step Solution

1. Step 1: Write the proportion equation
   82,140.84 : 113,266.83 = 64,882.87 : x
2. Step 2: Convert to fraction form
   82,140.84/113,266.83 = 64,882.87/x
3. Step 3: Cross multiply
   82,140.84x = 113,266.83 × 64,882.87
4. Step 4: Simplify right side
   82,140.84x = 7,349,076,885.24
5. Step 5: Solve for x
   x = 7,349,076,885.24/82,140.84
6. Step 6: Final answer
   x = 89,469.23