Finding the Fourth Proportional to 82,874.17, 114,409.70 and 64,685.89

Step by Step Solution

1. Step 1: Write the proportion equation
   82,874.17 : 114,409.70 = 64,685.89 : x
2. Step 2: Convert to fraction form
   82,874.17/114,409.70 = 64,685.89/x
3. Step 3: Cross multiply
   82,874.17x = 114,409.70 × 64,685.89
4. Step 4: Simplify right side
   82,874.17x = 7,400,693,269.13
5. Step 5: Solve for x
   x = 7,400,693,269.13/82,874.17
6. Step 6: Final answer
   x = 89,300.36