Finding the Fourth Proportional to 139,012,935.20, 191,825,170.22 and 82,487,939.18

Step by Step Solution

1. Step 1: Write the proportion equation
   139,012,935.20 : 191,825,170.22 = 82,487,939.18 : x
2. Step 2: Convert to fraction form
   139,012,935.20/191,825,170.22 = 82,487,939.18/x
3. Step 3: Cross multiply
   139,012,935.20x = 191,825,170.22 × 82,487,939.18
4. Step 4: Simplify right side
   139,012,935.20x = 15,823,262,974,300,508
5. Step 5: Solve for x
   x = 15,823,262,974,300,508/139,012,935.20
6. Step 6: Final answer
   x = 113,825,831.76