Finding the Fourth Proportional to 680,066.56, 938,514.56 and 374,155.52

Step by Step Solution

1. Step 1: Write the proportion equation
   680,066.56 : 938,514.56 = 374,155.52 : x
2. Step 2: Convert to fraction form
   680,066.56/938,514.56 = 374,155.52/x
3. Step 3: Cross multiply
   680,066.56x = 938,514.56 × 374,155.52
4. Step 4: Simplify right side
   680,066.56x = 351,150,403,224.37
5. Step 5: Solve for x
   x = 351,150,403,224.37/680,066.56
6. Step 6: Final answer
   x = 516,347.11