Finding the Fourth Proportional to 143,626.86, 215,440.17 and 64,648.82

Step by Step Solution

1. Step 1: Write the proportion equation
   143,626.86 : 215,440.17 = 64,648.82 : x
2. Step 2: Convert to fraction form
   143,626.86/215,440.17 = 64,648.82/x
3. Step 3: Cross multiply
   143,626.86x = 215,440.17 × 64,648.82
4. Step 4: Simplify right side
   143,626.86x = 13,927,951,693.90
5. Step 5: Solve for x
   x = 13,927,951,693.90/143,626.86
6. Step 6: Final answer
   x = 96,973.17