Finding the Fourth Proportional to 320,339,131.74, 442,071,481.28 and 188,185,698.27

Step by Step Solution

1. Step 1: Write the proportion equation
   320,339,131.74 : 442,071,481.28 = 188,185,698.27 : x
2. Step 2: Convert to fraction form
   320,339,131.74/442,071,481.28 = 188,185,698.27/x
3. Step 3: Cross multiply
   320,339,131.74x = 442,071,481.28 × 188,185,698.27
4. Step 4: Simplify right side
   320,339,131.74x = 83,191,530,388,989,104
5. Step 5: Solve for x
   x = 83,191,530,388,989,104/320,339,131.74
6. Step 6: Final answer
   x = 259,698,307.66