Finding the Fourth Proportional to 240,978.96, 361,525.68 and 83,208.72

Step by Step Solution

1. Step 1: Write the proportion equation
   240,978.96 : 361,525.68 = 83,208.72 : x
2. Step 2: Convert to fraction form
   240,978.96/361,525.68 = 83,208.72/x
3. Step 3: Cross multiply
   240,978.96x = 361,525.68 × 83,208.72
4. Step 4: Simplify right side
   240,978.96x = 30,082,089,079.93
5. Step 5: Solve for x
   x = 30,082,089,079.93/240,978.96
6. Step 6: Final answer
   x = 124,832.84