Finding the Fourth Proportional to 215,235.72, 322,856.01 and 65,477.25

Step by Step Solution

1. Step 1: Write the proportion equation
   215,235.72 : 322,856.01 = 65,477.25 : x
2. Step 2: Convert to fraction form
   215,235.72/322,856.01 = 65,477.25/x
3. Step 3: Cross multiply
   215,235.72x = 322,856.01 × 65,477.25
4. Step 4: Simplify right side
   215,235.72x = 21,139,723,680.77
5. Step 5: Solve for x
   x = 21,139,723,680.77/215,235.72
6. Step 6: Final answer
   x = 98,216.61