Finding the Fourth Proportional to 77,105.82, 115,825.65 and 65,283.67

Step by Step Solution

1. Step 1: Write the proportion equation
   77,105.82 : 115,825.65 = 65,283.67 : x
2. Step 2: Convert to fraction form
   77,105.82/115,825.65 = 65,283.67/x
3. Step 3: Cross multiply
   77,105.82x = 115,825.65 × 65,283.67
4. Step 4: Simplify right side
   77,105.82x = 7,561,523,412.10
5. Step 5: Solve for x
   x = 7,561,523,412.10/77,105.82
6. Step 6: Final answer
   x = 98,066.83