Finding the Fourth Proportional to 51,356.76, 76,978.60 and 33,580.09

Step by Step Solution

1. Step 1: Write the proportion equation
   51,356.76 : 76,978.60 = 33,580.09 : x
2. Step 2: Convert to fraction form
   51,356.76/76,978.60 = 33,580.09/x
3. Step 3: Cross multiply
   51,356.76x = 76,978.60 × 33,580.09
4. Step 4: Simplify right side
   51,356.76x = 2,584,948,316.07
5. Step 5: Solve for x
   x = 2,584,948,316.07/51,356.76
6. Step 6: Final answer
   x = 50,333.17