Finding the Fourth Proportional to 429,697.98, 644,613.83 and 130,107.23

Step by Step Solution

1. Step 1: Write the proportion equation
   429,697.98 : 644,613.83 = 130,107.23 : x
2. Step 2: Convert to fraction form
   429,697.98/644,613.83 = 130,107.23/x
3. Step 3: Cross multiply
   429,697.98x = 644,613.83 × 130,107.23
4. Step 4: Simplify right side
   429,697.98x = 83,868,915,967.39
5. Step 5: Solve for x
   x = 83,868,915,967.39/429,697.98
6. Step 6: Final answer
   x = 195,181.08