Finding the Fourth Proportional to 146,196.90, 201,751.02 and 79,128.90

Step by Step Solution

1. Step 1: Write the proportion equation
   146,196.90 : 201,751.02 = 79,128.90 : x
2. Step 2: Convert to fraction form
   146,196.90/201,751.02 = 79,128.90/x
3. Step 3: Cross multiply
   146,196.90x = 201,751.02 × 79,128.90
4. Step 4: Simplify right side
   146,196.90x = 15,964,336,286.48
5. Step 5: Solve for x
   x = 15,964,336,286.48/146,196.90
6. Step 6: Final answer
   x = 109,197.50