Finding the Fourth Proportional to 456,908.71, 685,468.16 and 153,343.15

Step by Step Solution

1. Step 1: Write the proportion equation
   456,908.71 : 685,468.16 = 153,343.15 : x
2. Step 2: Convert to fraction form
   456,908.71/685,468.16 = 153,343.15/x
3. Step 3: Cross multiply
   456,908.71x = 685,468.16 × 153,343.15
4. Step 4: Simplify right side
   456,908.71x = 105,111,843,451.76
5. Step 5: Solve for x
   x = 105,111,843,451.76/456,908.71
6. Step 6: Final answer
   x = 230,049.99