Finding the Fourth Proportional to 139,462, 209,951.88 and 127,061.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,462 : 209,951.88 = 127,061.72 : x
2. Step 2: Convert to fraction form
   139,462/209,951.88 = 127,061.72/x
3. Step 3: Cross multiply
   139,462x = 209,951.88 × 127,061.72
4. Step 4: Simplify right side
   139,462x = 26,676,846,990.03
5. Step 5: Solve for x
   x = 26,676,846,990.03/139,462
6. Step 6: Final answer
   x = 191,283.98