Finding the Fourth Proportional to 205,357.70, 308,090.55 and 65,116.10

Step by Step Solution

1. Step 1: Write the proportion equation
   205,357.70 : 308,090.55 = 65,116.10 : x
2. Step 2: Convert to fraction form
   205,357.70/308,090.55 = 65,116.10/x
3. Step 3: Cross multiply
   205,357.70x = 308,090.55 × 65,116.10
4. Step 4: Simplify right side
   205,357.70x = 20,061,655,062.86
5. Step 5: Solve for x
   x = 20,061,655,062.86/205,357.70
6. Step 6: Final answer
   x = 97,691.27