Finding the Fourth Proportional to 70,648.96, 105,950.04 and 28,518.16

Step by Step Solution

1. Step 1: Write the proportion equation
   70,648.96 : 105,950.04 = 28,518.16 : x
2. Step 2: Convert to fraction form
   70,648.96/105,950.04 = 28,518.16/x
3. Step 3: Cross multiply
   70,648.96x = 105,950.04 × 28,518.16
4. Step 4: Simplify right side
   70,648.96x = 3,021,500,192.73
5. Step 5: Solve for x
   x = 3,021,500,192.73/70,648.96
6. Step 6: Final answer
   x = 42,767.79