Finding the Fourth Proportional to 309,499.46, 427,126.87 and 173,526.82

Step by Step Solution

1. Step 1: Write the proportion equation
   309,499.46 : 427,126.87 = 173,526.82 : x
2. Step 2: Convert to fraction form
   309,499.46/427,126.87 = 173,526.82/x
3. Step 3: Cross multiply
   309,499.46x = 427,126.87 × 173,526.82
4. Step 4: Simplify right side
   309,499.46x = 74,117,966,871.36
5. Step 5: Solve for x
   x = 74,117,966,871.36/309,499.46
6. Step 6: Final answer
   x = 239,476.89