Finding the Fourth Proportional to 144,064.71, 198,820.56 and 80,412.06

Step by Step Solution

1. Step 1: Write the proportion equation
   144,064.71 : 198,820.56 = 80,412.06 : x
2. Step 2: Convert to fraction form
   144,064.71/198,820.56 = 80,412.06/x
3. Step 3: Cross multiply
   144,064.71x = 198,820.56 × 80,412.06
4. Step 4: Simplify right side
   144,064.71x = 15,987,570,799.95
5. Step 5: Solve for x
   x = 15,987,570,799.95/144,064.71
6. Step 6: Final answer
   x = 110,974.93