Finding the Fourth Proportional to 99,055, 148,414.78 and 70,831.77

Step by Step Solution

1. Step 1: Write the proportion equation
   99,055 : 148,414.78 = 70,831.77 : x
2. Step 2: Convert to fraction form
   99,055/148,414.78 = 70,831.77/x
3. Step 3: Cross multiply
   99,055x = 148,414.78 × 70,831.77
4. Step 4: Simplify right side
   99,055x = 10,512,481,561.56
5. Step 5: Solve for x
   x = 10,512,481,561.56/99,055
6. Step 6: Final answer
   x = 106,127.72