Finding the Fourth Proportional to 172,899.98, 259,287.56 and 73,067.88

Step by Step Solution

1. Step 1: Write the proportion equation
   172,899.98 : 259,287.56 = 73,067.88 : x
2. Step 2: Convert to fraction form
   172,899.98/259,287.56 = 73,067.88/x
3. Step 3: Cross multiply
   172,899.98x = 259,287.56 × 73,067.88
4. Step 4: Simplify right side
   172,899.98x = 18,945,592,319.57
5. Step 5: Solve for x
   x = 18,945,592,319.57/172,899.98
6. Step 6: Final answer
   x = 109,575.45