Finding the Fourth Proportional to 51,358.96, 70,878.72 and 28,698.10

Step by Step Solution

1. Step 1: Write the proportion equation
   51,358.96 : 70,878.72 = 28,698.10 : x
2. Step 2: Convert to fraction form
   51,358.96/70,878.72 = 28,698.10/x
3. Step 3: Cross multiply
   51,358.96x = 70,878.72 × 28,698.10
4. Step 4: Simplify right side
   51,358.96x = 2,034,084,594.43
5. Step 5: Solve for x
   x = 2,034,084,594.43/51,358.96
6. Step 6: Final answer
   x = 39,605.25