Finding the Fourth Proportional to 142,175,665.38, 196,202,685.06 and 79,451,763.78

Step by Step Solution

1. Step 1: Write the proportion equation
   142,175,665.38 : 196,202,685.06 = 79,451,763.78 : x
2. Step 2: Convert to fraction form
   142,175,665.38/196,202,685.06 = 79,451,763.78/x
3. Step 3: Cross multiply
   142,175,665.38x = 196,202,685.06 × 79,451,763.78
4. Step 4: Simplify right side
   142,175,665.38x = 15,588,649,386,388,856
5. Step 5: Solve for x
   x = 15,588,649,386,388,856/142,175,665.38
6. Step 6: Final answer
   x = 109,643,583.13