Finding the Fourth Proportional to 306,300.05, 459,150.12 and 171,429.99

Step by Step Solution

1. Step 1: Write the proportion equation
   306,300.05 : 459,150.12 = 171,429.99 : x
2. Step 2: Convert to fraction form
   306,300.05/459,150.12 = 171,429.99/x
3. Step 3: Cross multiply
   306,300.05x = 459,150.12 × 171,429.99
4. Step 4: Simplify right side
   306,300.05x = 78,712,098,758.29
5. Step 5: Solve for x
   x = 78,712,098,758.29/306,300.05
6. Step 6: Final answer
   x = 256,977.10