Finding the Fourth Proportional to 377,514.50, 566,359.35 and 128,196.74

Step by Step Solution

1. Step 1: Write the proportion equation
   377,514.50 : 566,359.35 = 128,196.74 : x
2. Step 2: Convert to fraction form
   377,514.50/566,359.35 = 128,196.74/x
3. Step 3: Cross multiply
   377,514.50x = 566,359.35 × 128,196.74
4. Step 4: Simplify right side
   377,514.50x = 72,605,422,338.52
5. Step 5: Solve for x
   x = 72,605,422,338.52/377,514.50
6. Step 6: Final answer
   x = 192,324.86