Finding the Fourth Proportional to 72,698.84, 109,003.60 and 28,273.81

Step by Step Solution

1. Step 1: Write the proportion equation
   72,698.84 : 109,003.60 = 28,273.81 : x
2. Step 2: Convert to fraction form
   72,698.84/109,003.60 = 28,273.81/x
3. Step 3: Cross multiply
   72,698.84x = 109,003.60 × 28,273.81
4. Step 4: Simplify right side
   72,698.84x = 3,081,947,075.72
5. Step 5: Solve for x
   x = 3,081,947,075.72/72,698.84
6. Step 6: Final answer
   x = 42,393.35