Finding the Fourth Proportional to 377,859.50, 521,426.85 and 208,060.82

Step by Step Solution

1. Step 1: Write the proportion equation
   377,859.50 : 521,426.85 = 208,060.82 : x
2. Step 2: Convert to fraction form
   377,859.50/521,426.85 = 208,060.82/x
3. Step 3: Cross multiply
   377,859.50x = 521,426.85 × 208,060.82
4. Step 4: Simplify right side
   377,859.50x = 108,488,495,373.88
5. Step 5: Solve for x
   x = 108,488,495,373.88/377,859.50
6. Step 6: Final answer
   x = 287,113.32