Finding the Fourth Proportional to 143,610.96, 215,416.56 and 64,632.96

Step by Step Solution

1. Step 1: Write the proportion equation
   143,610.96 : 215,416.56 = 64,632.96 : x
2. Step 2: Convert to fraction form
   143,610.96/215,416.56 = 64,632.96/x
3. Step 3: Cross multiply
   143,610.96x = 215,416.56 × 64,632.96
4. Step 4: Simplify right side
   143,610.96x = 13,923,009,905.82
5. Step 5: Solve for x
   x = 13,923,009,905.82/143,610.96
6. Step 6: Final answer
   x = 96,949.49