Finding the Fourth Proportional to 679,106.50, 937,196.13 and 377,300.50

Step by Step Solution

1. Step 1: Write the proportion equation
   679,106.50 : 937,196.13 = 377,300.50 : x
2. Step 2: Convert to fraction form
   679,106.50/937,196.13 = 377,300.50/x
3. Step 3: Cross multiply
   679,106.50x = 937,196.13 × 377,300.50
4. Step 4: Simplify right side
   679,106.50x = 353,604,568,447.07
5. Step 5: Solve for x
   x = 353,604,568,447.07/679,106.50
6. Step 6: Final answer
   x = 520,690.89