Finding the Fourth Proportional to 143,065.93, 197,427.22 and 79,402.09

Step by Step Solution

1. Step 1: Write the proportion equation
   143,065.93 : 197,427.22 = 79,402.09 : x
2. Step 2: Convert to fraction form
   143,065.93/197,427.22 = 79,402.09/x
3. Step 3: Cross multiply
   143,065.93x = 197,427.22 × 79,402.09
4. Step 4: Simplify right side
   143,065.93x = 15,676,133,890.89
5. Step 5: Solve for x
   x = 15,676,133,890.89/143,065.93
6. Step 6: Final answer
   x = 109,572.80