Finding the Fourth Proportional to 219,620.52, 303,108.82 and 139,055.52

Step by Step Solution

1. Step 1: Write the proportion equation
   219,620.52 : 303,108.82 = 139,055.52 : x
2. Step 2: Convert to fraction form
   219,620.52/303,108.82 = 139,055.52/x
3. Step 3: Cross multiply
   219,620.52x = 303,108.82 × 139,055.52
4. Step 4: Simplify right side
   219,620.52x = 42,148,954,581.69
5. Step 5: Solve for x
   x = 42,148,954,581.69/219,620.52
6. Step 6: Final answer
   x = 191,917.20