Finding the Fourth Proportional to 205,317.12, 307,986.72 and 65,086.68

Step by Step Solution

1. Step 1: Write the proportion equation
   205,317.12 : 307,986.72 = 65,086.68 : x
2. Step 2: Convert to fraction form
   205,317.12/307,986.72 = 65,086.68/x
3. Step 3: Cross multiply
   205,317.12x = 307,986.72 × 65,086.68
4. Step 4: Simplify right side
   205,317.12x = 20,045,833,088.89
5. Step 5: Solve for x
   x = 20,045,833,088.89/205,317.12
6. Step 6: Final answer
   x = 97,633.52