Finding the Fourth Proportional to 51,238.16, 70,705.98 and 28,579.52

Step by Step Solution

1. Step 1: Write the proportion equation
   51,238.16 : 70,705.98 = 28,579.52 : x
2. Step 2: Convert to fraction form
   51,238.16/70,705.98 = 28,579.52/x
3. Step 3: Cross multiply
   51,238.16x = 70,705.98 × 28,579.52
4. Step 4: Simplify right side
   51,238.16x = 2,020,742,969.53
5. Step 5: Solve for x
   x = 2,020,742,969.53/51,238.16
6. Step 6: Final answer
   x = 39,438.24