Finding the Fourth Proportional to 259,288.02, 388,924.61 and 141,704.10

Step by Step Solution

1. Step 1: Write the proportion equation
   259,288.02 : 388,924.61 = 141,704.10 : x
2. Step 2: Convert to fraction form
   259,288.02/388,924.61 = 141,704.10/x
3. Step 3: Cross multiply
   259,288.02x = 388,924.61 × 141,704.10
4. Step 4: Simplify right side
   259,288.02x = 55,112,211,119.38
5. Step 5: Solve for x
   x = 55,112,211,119.38/259,288.02
6. Step 6: Final answer
   x = 212,552.09