Finding the Fourth Proportional to 51,112.69, 70,539.83 and 28,761.01

Step by Step Solution

1. Step 1: Write the proportion equation
   51,112.69 : 70,539.83 = 28,761.01 : x
2. Step 2: Convert to fraction form
   51,112.69/70,539.83 = 28,761.01/x
3. Step 3: Cross multiply
   51,112.69x = 70,539.83 × 28,761.01
4. Step 4: Simplify right side
   51,112.69x = 2,028,796,543.73
5. Step 5: Solve for x
   x = 2,028,796,543.73/51,112.69
6. Step 6: Final answer
   x = 39,692.62