Finding the Fourth Proportional to 224,505.04, 309,870.06 and 129,067.20

Step by Step Solution

1. Step 1: Write the proportion equation
   224,505.04 : 309,870.06 = 129,067.20 : x
2. Step 2: Convert to fraction form
   224,505.04/309,870.06 = 129,067.20/x
3. Step 3: Cross multiply
   224,505.04x = 309,870.06 × 129,067.20
4. Step 4: Simplify right side
   224,505.04x = 39,994,061,008.03
5. Step 5: Solve for x
   x = 39,994,061,008.03/224,505.04
6. Step 6: Final answer
   x = 178,143.27