Finding the Fourth Proportional to 284,779.72, 392,996.69 and 155,726.56

Step by Step Solution

1. Step 1: Write the proportion equation
   284,779.72 : 392,996.69 = 155,726.56 : x
2. Step 2: Convert to fraction form
   284,779.72/392,996.69 = 155,726.56/x
3. Step 3: Cross multiply
   284,779.72x = 392,996.69 × 155,726.56
4. Step 4: Simplify right side
   284,779.72x = 61,200,022,625.09
5. Step 5: Solve for x
   x = 61,200,022,625.09/284,779.72
6. Step 6: Final answer
   x = 214,903.02