Finding the Fourth Proportional to 143,160.72, 197,557.56 and 78,630.72

Step by Step Solution

1. Step 1: Write the proportion equation
   143,160.72 : 197,557.56 = 78,630.72 : x
2. Step 2: Convert to fraction form
   143,160.72/197,557.56 = 78,630.72/x
3. Step 3: Cross multiply
   143,160.72x = 197,557.56 × 78,630.72
4. Step 4: Simplify right side
   143,160.72x = 15,534,093,184.24
5. Step 5: Solve for x
   x = 15,534,093,184.24/143,160.72
6. Step 6: Final answer
   x = 108,508.07