Finding the Fourth Proportional to 142,290.59, 196,363.83 and 77,763.82

Step by Step Solution

1. Step 1: Write the proportion equation
   142,290.59 : 196,363.83 = 77,763.82 : x
2. Step 2: Convert to fraction form
   142,290.59/196,363.83 = 77,763.82/x
3. Step 3: Cross multiply
   142,290.59x = 196,363.83 × 77,763.82
4. Step 4: Simplify right side
   142,290.59x = 15,270,002,021.54
5. Step 5: Solve for x
   x = 15,270,002,021.54/142,290.59
6. Step 6: Final answer
   x = 107,315.61