Finding the Fourth Proportional to 338,499, 467,128.62 and 187,605.72

Step by Step Solution

1. Step 1: Write the proportion equation
   338,499 : 467,128.62 = 187,605.72 : x
2. Step 2: Convert to fraction form
   338,499/467,128.62 = 187,605.72/x
3. Step 3: Cross multiply
   338,499x = 467,128.62 × 187,605.72
4. Step 4: Simplify right side
   338,499x = 87,636,001,087.71
5. Step 5: Solve for x
   x = 87,636,001,087.71/338,499
6. Step 6: Final answer
   x = 258,895.89