Finding the Fourth Proportional to 215,004.38, 322,493.81 and 65,245.91

Step by Step Solution

1. Step 1: Write the proportion equation
   215,004.38 : 322,493.81 = 65,245.91 : x
2. Step 2: Convert to fraction form
   215,004.38/322,493.81 = 65,245.91/x
3. Step 3: Cross multiply
   215,004.38x = 322,493.81 × 65,245.91
4. Step 4: Simplify right side
   215,004.38x = 21,041,400,164.12
5. Step 5: Solve for x
   x = 21,041,400,164.12/215,004.38
6. Step 6: Final answer
   x = 97,864.99