Finding the Fourth Proportional to 143,077.72, 197,447.82 and 79,415.56

Step by Step Solution

1. Step 1: Write the proportion equation
   143,077.72 : 197,447.82 = 79,415.56 : x
2. Step 2: Convert to fraction form
   143,077.72/197,447.82 = 79,415.56/x
3. Step 3: Cross multiply
   143,077.72x = 197,447.82 × 79,415.56
4. Step 4: Simplify right side
   143,077.72x = 15,680,429,196.08
5. Step 5: Solve for x
   x = 15,680,429,196.08/143,077.72
6. Step 6: Final answer
   x = 109,593.79