Finding the Fourth Proportional to 83,416.05, 114,979.47 and 65,234.57

Step by Step Solution

1. Step 1: Write the proportion equation
   83,416.05 : 114,979.47 = 65,234.57 : x
2. Step 2: Convert to fraction form
   83,416.05/114,979.47 = 65,234.57/x
3. Step 3: Cross multiply
   83,416.05x = 114,979.47 × 65,234.57
4. Step 4: Simplify right side
   83,416.05x = 7,500,636,015.17
5. Step 5: Solve for x
   x = 7,500,636,015.17/83,416.05
6. Step 6: Final answer
   x = 89,918.38