Finding the Fourth Proportional to 72,577.56, 108,907.80 and 28,198.56

Step by Step Solution

1. Step 1: Write the proportion equation
   72,577.56 : 108,907.80 = 28,198.56 : x
2. Step 2: Convert to fraction form
   72,577.56/108,907.80 = 28,198.56/x
3. Step 3: Cross multiply
   72,577.56x = 108,907.80 × 28,198.56
4. Step 4: Simplify right side
   72,577.56x = 3,071,043,132.77
5. Step 5: Solve for x
   x = 3,071,043,132.77/72,577.56
6. Step 6: Final answer
   x = 42,313.95