Finding the Fourth Proportional to 377,086.19, 520,546.69 and 224,173.89

Step by Step Solution

1. Step 1: Write the proportion equation
   377,086.19 : 520,546.69 = 224,173.89 : x
2. Step 2: Convert to fraction form
   377,086.19/520,546.69 = 224,173.89/x
3. Step 3: Cross multiply
   377,086.19x = 520,546.69 × 224,173.89
4. Step 4: Simplify right side
   377,086.19x = 116,692,974,001.69
5. Step 5: Solve for x
   x = 116,692,974,001.69/377,086.19
6. Step 6: Final answer
   x = 309,459.68