Finding the Fourth Proportional to 143,018.57, 197,365.62 and 79,356.83

Step by Step Solution

1. Step 1: Write the proportion equation
   143,018.57 : 197,365.62 = 79,356.83 : x
2. Step 2: Convert to fraction form
   143,018.57/197,365.62 = 79,356.83/x
3. Step 3: Cross multiply
   143,018.57x = 197,365.62 × 79,356.83
4. Step 4: Simplify right side
   143,018.57x = 15,662,309,954.18
5. Step 5: Solve for x
   x = 15,662,309,954.18/143,018.57
6. Step 6: Final answer
   x = 109,512.42