Finding the Fourth Proportional to 215,054.28, 322,559.28 and 65,288.52

Step by Step Solution

1. Step 1: Write the proportion equation
   215,054.28 : 322,559.28 = 65,288.52 : x
2. Step 2: Convert to fraction form
   215,054.28/322,559.28 = 65,288.52/x
3. Step 3: Cross multiply
   215,054.28x = 322,559.28 × 65,288.52
4. Step 4: Simplify right side
   215,054.28x = 21,059,418,003.47
5. Step 5: Solve for x
   x = 21,059,418,003.47/215,054.28
6. Step 6: Final answer
   x = 97,926.06