Finding the Fourth Proportional to 243,610.72, 365,445.78 and 103,321.96

Step by Step Solution

1. Step 1: Write the proportion equation
   243,610.72 : 365,445.78 = 103,321.96 : x
2. Step 2: Convert to fraction form
   243,610.72/365,445.78 = 103,321.96/x
3. Step 3: Cross multiply
   243,610.72x = 365,445.78 × 103,321.96
4. Step 4: Simplify right side
   243,610.72x = 37,758,574,263.33
5. Step 5: Solve for x
   x = 37,758,574,263.33/243,610.72
6. Step 6: Final answer
   x = 154,995.54