Finding the Fourth Proportional to 143,061.58, 197,434.43 and 79,399.36

Step by Step Solution

1. Step 1: Write the proportion equation
   143,061.58 : 197,434.43 = 79,399.36 : x
2. Step 2: Convert to fraction form
   143,061.58/197,434.43 = 79,399.36/x
3. Step 3: Cross multiply
   143,061.58x = 197,434.43 × 79,399.36
4. Step 4: Simplify right side
   143,061.58x = 15,676,167,383.96
5. Step 5: Solve for x
   x = 15,676,167,383.96/143,061.58
6. Step 6: Final answer
   x = 109,576.36