Finding the Fourth Proportional to 89,820.76, 123,947.40 and 51,571.48

Step by Step Solution

1. Step 1: Write the proportion equation
   89,820.76 : 123,947.40 = 51,571.48 : x
2. Step 2: Convert to fraction form
   89,820.76/123,947.40 = 51,571.48/x
3. Step 3: Cross multiply
   89,820.76x = 123,947.40 × 51,571.48
4. Step 4: Simplify right side
   89,820.76x = 6,392,150,860.15
5. Step 5: Solve for x
   x = 6,392,150,860.15/89,820.76
6. Step 6: Final answer
   x = 71,165.63