Finding the Fourth Proportional to 225,659.28, 338,488.12 and 100,912.72

Step by Step Solution

1. Step 1: Write the proportion equation
   225,659.28 : 338,488.12 = 100,912.72 : x
2. Step 2: Convert to fraction form
   225,659.28/338,488.12 = 100,912.72/x
3. Step 3: Cross multiply
   225,659.28x = 338,488.12 × 100,912.72
4. Step 4: Simplify right side
   225,659.28x = 34,157,756,876.89
5. Step 5: Solve for x
   x = 34,157,756,876.89/225,659.28
6. Step 6: Final answer
   x = 151,368.72