Finding the Fourth Proportional to 108,720.48, 162,868.49 and 74,906.72

Step by Step Solution

1. Step 1: Write the proportion equation
   108,720.48 : 162,868.49 = 74,906.72 : x
2. Step 2: Convert to fraction form
   108,720.48/162,868.49 = 74,906.72/x
3. Step 3: Cross multiply
   108,720.48x = 162,868.49 × 74,906.72
4. Step 4: Simplify right side
   108,720.48x = 12,199,944,377.25
5. Step 5: Solve for x
   x = 12,199,944,377.25/108,720.48
6. Step 6: Final answer
   x = 112,213.86