Finding the Fourth Proportional to 500,112.72, 690,156.72 and 273,772.80

Step by Step Solution

1. Step 1: Write the proportion equation
   500,112.72 : 690,156.72 = 273,772.80 : x
2. Step 2: Convert to fraction form
   500,112.72/690,156.72 = 273,772.80/x
3. Step 3: Cross multiply
   500,112.72x = 690,156.72 × 273,772.80
4. Step 4: Simplify right side
   500,112.72x = 188,946,137,673.22
5. Step 5: Solve for x
   x = 188,946,137,673.22/500,112.72
6. Step 6: Final answer
   x = 377,807.10