Finding the Fourth Proportional to 245,304.02, 338,547.59 and 136,419.20

Step by Step Solution

1. Step 1: Write the proportion equation
   245,304.02 : 338,547.59 = 136,419.20 : x
2. Step 2: Convert to fraction form
   245,304.02/338,547.59 = 136,419.20/x
3. Step 3: Cross multiply
   245,304.02x = 338,547.59 × 136,419.20
4. Step 4: Simplify right side
   245,304.02x = 46,184,389,014.89
5. Step 5: Solve for x
   x = 46,184,389,014.89/245,304.02
6. Step 6: Final answer
   x = 188,274.09