Finding the Fourth Proportional to 280,146.44, 386,595.72 and 152,826.56

Step by Step Solution

1. Step 1: Write the proportion equation
   280,146.44 : 386,595.72 = 152,826.56 : x
2. Step 2: Convert to fraction form
   280,146.44/386,595.72 = 152,826.56/x
3. Step 3: Cross multiply
   280,146.44x = 386,595.72 × 152,826.56
4. Step 4: Simplify right side
   280,146.44x = 59,082,093,998.32
5. Step 5: Solve for x
   x = 59,082,093,998.32/280,146.44
6. Step 6: Final answer
   x = 210,897.18