Finding the Fourth Proportional to 139,008,953.85, 207,285,270.89 and 137,761,271.56

Step by Step Solution

1. Step 1: Write the proportion equation
   139,008,953.85 : 207,285,270.89 = 137,761,271.56 : x
2. Step 2: Convert to fraction form
   139,008,953.85/207,285,270.89 = 137,761,271.56/x
3. Step 3: Cross multiply
   139,008,953.85x = 207,285,270.89 × 137,761,271.56
4. Step 4: Simplify right side
   139,008,953.85x = 28,555,882,493,465,452
5. Step 5: Solve for x
   x = 28,555,882,493,465,452/139,008,953.85
6. Step 6: Final answer
   x = 205,424,770.87