Finding the Fourth Proportional to 82,876.17, 114,412.46 and 64,687.89

Step by Step Solution

1. Step 1: Write the proportion equation
   82,876.17 : 114,412.46 = 64,687.89 : x
2. Step 2: Convert to fraction form
   82,876.17/114,412.46 = 64,687.89/x
3. Step 3: Cross multiply
   82,876.17x = 114,412.46 × 64,687.89
4. Step 4: Simplify right side
   82,876.17x = 7,401,100,303.67
5. Step 5: Solve for x
   x = 7,401,100,303.67/82,876.17
6. Step 6: Final answer
   x = 89,303.12