Finding the Fourth Proportional to 215,185.69, 322,796.61 and 65,427.28

Step by Step Solution

1. Step 1: Write the proportion equation
   215,185.69 : 322,796.61 = 65,427.28 : x
2. Step 2: Convert to fraction form
   215,185.69/322,796.61 = 65,427.28/x
3. Step 3: Cross multiply
   215,185.69x = 322,796.61 × 65,427.28
4. Step 4: Simplify right side
   215,185.69x = 21,119,704,102.38
5. Step 5: Solve for x
   x = 21,119,704,102.38/215,185.69
6. Step 6: Final answer
   x = 98,146.41