Finding the Fourth Proportional to 191,456.62, 287,243.49 and 98,028.46

Step by Step Solution

1. Step 1: Write the proportion equation
   191,456.62 : 287,243.49 = 98,028.46 : x
2. Step 2: Convert to fraction form
   191,456.62/287,243.49 = 98,028.46/x
3. Step 3: Cross multiply
   191,456.62x = 287,243.49 × 98,028.46
4. Step 4: Simplify right side
   191,456.62x = 28,158,036,969.73
5. Step 5: Solve for x
   x = 28,158,036,969.73/191,456.62
6. Step 6: Final answer
   x = 147,072.67