Finding the Fourth Proportional to 377,962.57, 521,588.37 and 208,196.74

Step by Step Solution

1. Step 1: Write the proportion equation
   377,962.57 : 521,588.37 = 208,196.74 : x
2. Step 2: Convert to fraction form
   377,962.57/521,588.37 = 208,196.74/x
3. Step 3: Cross multiply
   377,962.57x = 521,588.37 × 208,196.74
4. Step 4: Simplify right side
   377,962.57x = 108,592,998,255.91
5. Step 5: Solve for x
   x = 108,592,998,255.91/377,962.57
6. Step 6: Final answer
   x = 287,311.51