Finding the Fourth Proportional to 70,870.82, 106,310.12 and 28,744.65

Step by Step Solution

1. Step 1: Write the proportion equation
   70,870.82 : 106,310.12 = 28,744.65 : x
2. Step 2: Convert to fraction form
   70,870.82/106,310.12 = 28,744.65/x
3. Step 3: Cross multiply
   70,870.82x = 106,310.12 × 28,744.65
4. Step 4: Simplify right side
   70,870.82x = 3,055,847,047.13
5. Step 5: Solve for x
   x = 3,055,847,047.13/70,870.82
6. Step 6: Final answer
   x = 43,118.55