Finding the Fourth Proportional to 128,145.62, 192,196.56 and 34,629.50

Step by Step Solution

1. Step 1: Write the proportion equation
   128,145.62 : 192,196.56 = 34,629.50 : x
2. Step 2: Convert to fraction form
   128,145.62/192,196.56 = 34,629.50/x
3. Step 3: Cross multiply
   128,145.62x = 192,196.56 × 34,629.50
4. Step 4: Simplify right side
   128,145.62x = 6,655,670,774.52
5. Step 5: Solve for x
   x = 6,655,670,774.52/128,145.62
6. Step 6: Final answer
   x = 51,938.34