Finding the Fourth Proportional to 245,120,900.17, 338,256,661.83 and 133,609,287.61

Step by Step Solution

1. Step 1: Write the proportion equation
   245,120,900.17 : 338,256,661.83 = 133,609,287.61 : x
2. Step 2: Convert to fraction form
   245,120,900.17/338,256,661.83 = 133,609,287.61/x
3. Step 3: Cross multiply
   245,120,900.17x = 338,256,661.83 × 133,609,287.61
4. Step 4: Simplify right side
   245,120,900.17x = 45,194,231,616,442,976
5. Step 5: Solve for x
   x = 45,194,231,616,442,976/245,120,900.17
6. Step 6: Final answer
   x = 184,375,267.82