Finding the Fourth Proportional to 190,667, 286,075.83 and 72,369.74

Step by Step Solution

1. Step 1: Write the proportion equation
   190,667 : 286,075.83 = 72,369.74 : x
2. Step 2: Convert to fraction form
   190,667/286,075.83 = 72,369.74/x
3. Step 3: Cross multiply
   190,667x = 286,075.83 × 72,369.74
4. Step 4: Simplify right side
   190,667x = 20,703,233,437.38
5. Step 5: Solve for x
   x = 20,703,233,437.38/190,667
6. Step 6: Final answer
   x = 108,583.20