Finding the Fourth Proportional to 139,919.77, 209,941.49 and 73,343.98

Step by Step Solution

1. Step 1: Write the proportion equation
   139,919.77 : 209,941.49 = 73,343.98 : x
2. Step 2: Convert to fraction form
   139,919.77/209,941.49 = 73,343.98/x
3. Step 3: Cross multiply
   139,919.77x = 209,941.49 × 73,343.98
4. Step 4: Simplify right side
   139,919.77x = 15,397,944,443.73
5. Step 5: Solve for x
   x = 15,397,944,443.73/139,919.77
6. Step 6: Final answer
   x = 110,048.38