Finding the Fourth Proportional to 362,300.50, 499,990.31 and 201,155.57

Step by Step Solution

1. Step 1: Write the proportion equation
   362,300.50 : 499,990.31 = 201,155.57 : x
2. Step 2: Convert to fraction form
   362,300.50/499,990.31 = 201,155.57/x
3. Step 3: Cross multiply
   362,300.50x = 499,990.31 × 201,155.57
4. Step 4: Simplify right side
   362,300.50x = 100,575,834,796.75
5. Step 5: Solve for x
   x = 100,575,834,796.75/362,300.50
6. Step 6: Final answer
   x = 277,603.36