Finding the Fourth Proportional to 51,336.50, 70,844.37 and 28,980.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,336.50 : 70,844.37 = 28,980.50 : x
2. Step 2: Convert to fraction form
   51,336.50/70,844.37 = 28,980.50/x
3. Step 3: Cross multiply
   51,336.50x = 70,844.37 × 28,980.50
4. Step 4: Simplify right side
   51,336.50x = 2,053,105,264.79
5. Step 5: Solve for x
   x = 2,053,105,264.79/51,336.50
6. Step 6: Final answer
   x = 39,993.09