Finding the Fourth Proportional to 139,227,406.24, 207,819,127.91 and 128,967,052

Step by Step Solution

1. Step 1: Write the proportion equation
   139,227,406.24 : 207,819,127.91 = 128,967,052 : x
2. Step 2: Convert to fraction form
   139,227,406.24/207,819,127.91 = 128,967,052/x
3. Step 3: Cross multiply
   139,227,406.24x = 207,819,127.91 × 128,967,052
4. Step 4: Simplify right side
   139,227,406.24x = 26,801,820,275,763,620
5. Step 5: Solve for x
   x = 26,801,820,275,763,620/139,227,406.24
6. Step 6: Final answer
   x = 192,503,911.40