Finding the Fourth Proportional to 70,327.89, 105,386.06 and 28,166.18

Step by Step Solution

1. Step 1: Write the proportion equation
   70,327.89 : 105,386.06 = 28,166.18 : x
2. Step 2: Convert to fraction form
   70,327.89/105,386.06 = 28,166.18/x
3. Step 3: Cross multiply
   70,327.89x = 105,386.06 × 28,166.18
4. Step 4: Simplify right side
   70,327.89x = 2,968,322,278.94
5. Step 5: Solve for x
   x = 2,968,322,278.94/70,327.89
6. Step 6: Final answer
   x = 42,206.90