Finding the Fourth Proportional to 377,872.04, 521,468.34 and 208,118.72

Step by Step Solution

1. Step 1: Write the proportion equation
   377,872.04 : 521,468.34 = 208,118.72 : x
2. Step 2: Convert to fraction form
   377,872.04/521,468.34 = 208,118.72/x
3. Step 3: Cross multiply
   377,872.04x = 521,468.34 × 208,118.72
4. Step 4: Simplify right side
   377,872.04x = 108,527,323,441.33
5. Step 5: Solve for x
   x = 108,527,323,441.33/377,872.04
6. Step 6: Final answer
   x = 287,206.55