Finding the Fourth Proportional to 284,115.52, 392,088.83 and 155,061.06

Step by Step Solution

1. Step 1: Write the proportion equation
   284,115.52 : 392,088.83 = 155,061.06 : x
2. Step 2: Convert to fraction form
   284,115.52/392,088.83 = 155,061.06/x
3. Step 3: Cross multiply
   284,115.52x = 392,088.83 × 155,061.06
4. Step 4: Simplify right side
   284,115.52x = 60,797,709,593.96
5. Step 5: Solve for x
   x = 60,797,709,593.96/284,115.52
6. Step 6: Final answer
   x = 213,989.40