Finding the Fourth Proportional to 215,016.16, 322,536.57 and 65,261.35

Step by Step Solution

1. Step 1: Write the proportion equation
   215,016.16 : 322,536.57 = 65,261.35 : x
2. Step 2: Convert to fraction form
   215,016.16/322,536.57 = 65,261.35/x
3. Step 3: Cross multiply
   215,016.16x = 322,536.57 × 65,261.35
4. Step 4: Simplify right side
   215,016.16x = 21,049,171,982.57
5. Step 5: Solve for x
   x = 21,049,171,982.57/215,016.16
6. Step 6: Final answer
   x = 97,895.77