Finding the Fourth Proportional to 51,443.76, 70,991.88 and 28,782.84

Step by Step Solution

1. Step 1: Write the proportion equation
   51,443.76 : 70,991.88 = 28,782.84 : x
2. Step 2: Convert to fraction form
   51,443.76/70,991.88 = 28,782.84/x
3. Step 3: Cross multiply
   51,443.76x = 70,991.88 × 28,782.84
4. Step 4: Simplify right side
   51,443.76x = 2,043,347,923.34
5. Step 5: Solve for x
   x = 2,043,347,923.34/51,443.76
6. Step 6: Final answer
   x = 39,720.03