Finding the Fourth Proportional to 143,430.72, 197,935.56 and 79,767.15

Step by Step Solution

1. Step 1: Write the proportion equation
   143,430.72 : 197,935.56 = 79,767.15 : x
2. Step 2: Convert to fraction form
   143,430.72/197,935.56 = 79,767.15/x
3. Step 3: Cross multiply
   143,430.72x = 197,935.56 × 79,767.15
4. Step 4: Simplify right side
   143,430.72x = 15,788,755,504.85
5. Step 5: Solve for x
   x = 15,788,755,504.85/143,430.72
6. Step 6: Final answer
   x = 110,079.32