Finding the Fourth Proportional to 143,628.86, 215,443.17 and 64,650.82

Step by Step Solution

1. Step 1: Write the proportion equation
   143,628.86 : 215,443.17 = 64,650.82 : x
2. Step 2: Convert to fraction form
   143,628.86/215,443.17 = 64,650.82/x
3. Step 3: Cross multiply
   143,628.86x = 215,443.17 × 64,650.82
4. Step 4: Simplify right side
   143,628.86x = 13,928,577,603.90
5. Step 5: Solve for x
   x = 13,928,577,603.90/143,628.86
6. Step 6: Final answer
   x = 96,976.18