Finding the Fourth Proportional to 51,441.45, 70,992.50 and 28,783.05

Step by Step Solution

1. Step 1: Write the proportion equation
   51,441.45 : 70,992.50 = 28,783.05 : x
2. Step 2: Convert to fraction form
   51,441.45/70,992.50 = 28,783.05/x
3. Step 3: Cross multiply
   51,441.45x = 70,992.50 × 28,783.05
4. Step 4: Simplify right side
   51,441.45x = 2,043,380,533.21
5. Step 5: Solve for x
   x = 2,043,380,533.21/51,441.45
6. Step 6: Final answer
   x = 39,722.45