Finding the Fourth Proportional to 147,789, 203,948.82 and 80,721

Step by Step Solution

1. Step 1: Write the proportion equation
   147,789 : 203,948.82 = 80,721 : x
2. Step 2: Convert to fraction form
   147,789/203,948.82 = 80,721/x
3. Step 3: Cross multiply
   147,789x = 203,948.82 × 80,721
4. Step 4: Simplify right side
   147,789x = 16,462,952,699.22
5. Step 5: Solve for x
   x = 16,462,952,699.22/147,789
6. Step 6: Final answer
   x = 111,394.98