Finding the Fourth Proportional to 51,196.94, 70,652.56 and 28,535.30

Step by Step Solution

1. Step 1: Write the proportion equation
   51,196.94 : 70,652.56 = 28,535.30 : x
2. Step 2: Convert to fraction form
   51,196.94/70,652.56 = 28,535.30/x
3. Step 3: Cross multiply
   51,196.94x = 70,652.56 × 28,535.30
4. Step 4: Simplify right side
   51,196.94x = 2,016,091,995.37
5. Step 5: Solve for x
   x = 2,016,091,995.37/51,196.94
6. Step 6: Final answer
   x = 39,379.15