Finding the Fourth Proportional to 139,054,900.48, 208,922,421.28 and 131,320,234.24

Step by Step Solution

1. Step 1: Write the proportion equation
   139,054,900.48 : 208,922,421.28 = 131,320,234.24 : x
2. Step 2: Convert to fraction form
   139,054,900.48/208,922,421.28 = 131,320,234.24/x
3. Step 3: Cross multiply
   139,054,900.48x = 208,922,421.28 × 131,320,234.24
4. Step 4: Simplify right side
   139,054,900.48x = 27,435,741,300,477,560
5. Step 5: Solve for x
   x = 27,435,741,300,477,560/139,054,900.48
6. Step 6: Final answer
   x = 197,301,506.14