Finding the Fourth Proportional to 199,402.72, 275,174.48 and 109,978.72

Step by Step Solution

1. Step 1: Write the proportion equation
   199,402.72 : 275,174.48 = 109,978.72 : x
2. Step 2: Convert to fraction form
   199,402.72/275,174.48 = 109,978.72/x
3. Step 3: Cross multiply
   199,402.72x = 275,174.48 × 109,978.72
4. Step 4: Simplify right side
   199,402.72x = 30,263,337,087.07
5. Step 5: Solve for x
   x = 30,263,337,087.07/199,402.72
6. Step 6: Final answer
   x = 151,769.93