Finding the Fourth Proportional to 51,061.41, 70,464.80 and 28,399.84

Step by Step Solution

1. Step 1: Write the proportion equation
   51,061.41 : 70,464.80 = 28,399.84 : x
2. Step 2: Convert to fraction form
   51,061.41/70,464.80 = 28,399.84/x
3. Step 3: Cross multiply
   51,061.41x = 70,464.80 × 28,399.84
4. Step 4: Simplify right side
   51,061.41x = 2,001,188,940.47
5. Step 5: Solve for x
   x = 2,001,188,940.47/51,061.41
6. Step 6: Final answer
   x = 39,191.81