Finding the Fourth Proportional to 51,141.61, 70,573.98 and 28,479.74

Step by Step Solution

1. Step 1: Write the proportion equation
   51,141.61 : 70,573.98 = 28,479.74 : x
2. Step 2: Convert to fraction form
   51,141.61/70,573.98 = 28,479.74/x
3. Step 3: Cross multiply
   51,141.61x = 70,573.98 × 28,479.74
4. Step 4: Simplify right side
   51,141.61x = 2,009,928,355.09
5. Step 5: Solve for x
   x = 2,009,928,355.09/51,141.61
6. Step 6: Final answer
   x = 39,301.23