Finding the Fourth Proportional to 680,991.21, 939,756.27 and 375,096.24

Step by Step Solution

1. Step 1: Write the proportion equation
   680,991.21 : 939,756.27 = 375,096.24 : x
2. Step 2: Convert to fraction form
   680,991.21/939,756.27 = 375,096.24/x
3. Step 3: Cross multiply
   680,991.21x = 939,756.27 × 375,096.24
4. Step 4: Simplify right side
   680,991.21x = 352,499,043,393.43
5. Step 5: Solve for x
   x = 352,499,043,393.43/680,991.21
6. Step 6: Final answer
   x = 517,626.42