Finding the Fourth Proportional to 143,091.56, 197,475.30 and 79,430.42

Step by Step Solution

1. Step 1: Write the proportion equation
   143,091.56 : 197,475.30 = 79,430.42 : x
2. Step 2: Convert to fraction form
   143,091.56/197,475.30 = 79,430.42/x
3. Step 3: Cross multiply
   143,091.56x = 197,475.30 × 79,430.42
4. Step 4: Simplify right side
   143,091.56x = 15,685,546,018.63
5. Step 5: Solve for x
   x = 15,685,546,018.63/143,091.56
6. Step 6: Final answer
   x = 109,618.95