Finding the Fourth Proportional to 219,734.72, 303,245.52 and 139,132.88

Step by Step Solution

1. Step 1: Write the proportion equation
   219,734.72 : 303,245.52 = 139,132.88 : x
2. Step 2: Convert to fraction form
   219,734.72/303,245.52 = 139,132.88/x
3. Step 3: Cross multiply
   219,734.72x = 303,245.52 × 139,132.88
4. Step 4: Simplify right side
   219,734.72x = 42,191,422,544.70
5. Step 5: Solve for x
   x = 42,191,422,544.70/219,734.72
6. Step 6: Final answer
   x = 192,010.72