Finding the Fourth Proportional to 72,659.22, 109,016.79 and 28,317.39

Step by Step Solution

1. Step 1: Write the proportion equation
   72,659.22 : 109,016.79 = 28,317.39 : x
2. Step 2: Convert to fraction form
   72,659.22/109,016.79 = 28,317.39/x
3. Step 3: Cross multiply
   72,659.22x = 109,016.79 × 28,317.39
4. Step 4: Simplify right side
   72,659.22x = 3,087,070,958.98
5. Step 5: Solve for x
   x = 3,087,070,958.98/72,659.22
6. Step 6: Final answer
   x = 42,486.98