Finding the Fourth Proportional to 200,139.32, 300,229.94 and 65,213.87

Step by Step Solution

1. Step 1: Write the proportion equation
   200,139.32 : 300,229.94 = 65,213.87 : x
2. Step 2: Convert to fraction form
   200,139.32/300,229.94 = 65,213.87/x
3. Step 3: Cross multiply
   200,139.32x = 300,229.94 × 65,213.87
4. Step 4: Simplify right side
   200,139.32x = 19,579,155,951.20
5. Step 5: Solve for x
   x = 19,579,155,951.20/200,139.32
6. Step 6: Final answer
   x = 97,827.63