Finding the Fourth Proportional to 52,853.25, 72,939.69 and 28,980.84

Step by Step Solution

1. Step 1: Write the proportion equation
   52,853.25 : 72,939.69 = 28,980.84 : x
2. Step 2: Convert to fraction form
   52,853.25/72,939.69 = 28,980.84/x
3. Step 3: Cross multiply
   52,853.25x = 72,939.69 × 28,980.84
4. Step 4: Simplify right side
   52,853.25x = 2,113,853,485.54
5. Step 5: Solve for x
   x = 2,113,853,485.54/52,853.25
6. Step 6: Final answer
   x = 39,994.77