Finding the Fourth Proportional to 362,142.02, 499,817.84 and 209,152.72

Step by Step Solution

1. Step 1: Write the proportion equation
   362,142.02 : 499,817.84 = 209,152.72 : x
2. Step 2: Convert to fraction form
   362,142.02/499,817.84 = 209,152.72/x
3. Step 3: Cross multiply
   362,142.02x = 499,817.84 × 209,152.72
4. Step 4: Simplify right side
   362,142.02x = 104,538,260,740.53
5. Step 5: Solve for x
   x = 104,538,260,740.53/362,142.02
6. Step 6: Final answer
   x = 288,666.48