Finding the Fourth Proportional to 139,923.80, 209,947.56 and 73,347.98

Step by Step Solution

1. Step 1: Write the proportion equation
   139,923.80 : 209,947.56 = 73,347.98 : x
2. Step 2: Convert to fraction form
   139,923.80/209,947.56 = 73,347.98/x
3. Step 3: Cross multiply
   139,923.80x = 209,947.56 × 73,347.98
4. Step 4: Simplify right side
   139,923.80x = 15,399,229,431.93
5. Step 5: Solve for x
   x = 15,399,229,431.93/139,923.80
6. Step 6: Final answer
   x = 110,054.40