Finding the Fourth Proportional to 199,139.76, 274,812.72 and 109,715.76

Step by Step Solution

1. Step 1: Write the proportion equation
   199,139.76 : 274,812.72 = 109,715.76 : x
2. Step 2: Convert to fraction form
   199,139.76/274,812.72 = 109,715.76/x
3. Step 3: Cross multiply
   199,139.76x = 274,812.72 × 109,715.76
4. Step 4: Simplify right side
   199,139.76x = 30,151,286,432.47
5. Step 5: Solve for x
   x = 30,151,286,432.47/199,139.76
6. Step 6: Final answer
   x = 151,407.67