Finding the Fourth Proportional to 377,520.76, 520,978.73 and 207,754.89

Step by Step Solution

1. Step 1: Write the proportion equation
   377,520.76 : 520,978.73 = 207,754.89 : x
2. Step 2: Convert to fraction form
   377,520.76/520,978.73 = 207,754.89/x
3. Step 3: Cross multiply
   377,520.76x = 520,978.73 × 207,754.89
4. Step 4: Simplify right side
   377,520.76x = 108,235,875,099.82
5. Step 5: Solve for x
   x = 108,235,875,099.82/377,520.76
6. Step 6: Final answer
   x = 286,701.78