Finding the Fourth Proportional to 139,463, 209,953.39 and 127,062.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,463 : 209,953.39 = 127,062.72 : x
2. Step 2: Convert to fraction form
   139,463/209,953.39 = 127,062.72/x
3. Step 3: Cross multiply
   139,463x = 209,953.39 × 127,062.72
4. Step 4: Simplify right side
   139,463x = 26,677,248,806.62
5. Step 5: Solve for x
   x = 26,677,248,806.62/139,463
6. Step 6: Final answer
   x = 191,285.49