Finding the Fourth Proportional to 147,849, 204,031.80 and 80,781

Step by Step Solution

1. Step 1: Write the proportion equation
   147,849 : 204,031.80 = 80,781 : x
2. Step 2: Convert to fraction form
   147,849/204,031.80 = 80,781/x
3. Step 3: Cross multiply
   147,849x = 204,031.80 × 80,781
4. Step 4: Simplify right side
   147,849x = 16,481,892,835.80
5. Step 5: Solve for x
   x = 16,481,892,835.80/147,849
6. Step 6: Final answer
   x = 111,477.88