Finding the Fourth Proportional to 139,939.77, 209,971.53 and 73,363.98

Step by Step Solution

1. Step 1: Write the proportion equation
   139,939.77 : 209,971.53 = 73,363.98 : x
2. Step 2: Convert to fraction form
   139,939.77/209,971.53 = 73,363.98/x
3. Step 3: Cross multiply
   139,939.77x = 209,971.53 × 73,363.98
4. Step 4: Simplify right side
   139,939.77x = 15,404,347,127.49
5. Step 5: Solve for x
   x = 15,404,347,127.49/139,939.77
6. Step 6: Final answer
   x = 110,078.41