Finding the Fourth Proportional to 284,105.58, 392,067.98 and 155,045.07

Step by Step Solution

1. Step 1: Write the proportion equation
   284,105.58 : 392,067.98 = 155,045.07 : x
2. Step 2: Convert to fraction form
   284,105.58/392,067.98 = 155,045.07/x
3. Step 3: Cross multiply
   284,105.58x = 392,067.98 × 155,045.07
4. Step 4: Simplify right side
   284,105.58x = 60,788,207,210.05
5. Step 5: Solve for x
   x = 60,788,207,210.05/284,105.58
6. Step 6: Final answer
   x = 213,963.44