Finding the Fourth Proportional to 142,805.50, 197,071.59 and 79,147.41

Step by Step Solution

1. Step 1: Write the proportion equation
   142,805.50 : 197,071.59 = 79,147.41 : x
2. Step 2: Convert to fraction form
   142,805.50/197,071.59 = 79,147.41/x
3. Step 3: Cross multiply
   142,805.50x = 197,071.59 × 79,147.41
4. Step 4: Simplify right side
   142,805.50x = 15,597,705,933.08
5. Step 5: Solve for x
   x = 15,597,705,933.08/142,805.50
6. Step 6: Final answer
   x = 109,223.43