Finding the Fourth Proportional to 679,109.50, 937,200.27 and 377,303.50

Step by Step Solution

1. Step 1: Write the proportion equation
   679,109.50 : 937,200.27 = 377,303.50 : x
2. Step 2: Convert to fraction form
   679,109.50/937,200.27 = 377,303.50/x
3. Step 3: Cross multiply
   679,109.50x = 937,200.27 × 377,303.50
4. Step 4: Simplify right side
   679,109.50x = 353,608,942,071.95
5. Step 5: Solve for x
   x = 353,608,942,071.95/679,109.50
6. Step 6: Final answer
   x = 520,695.03