Finding the Fourth Proportional to 359,128.49, 538,700.93 and 106,404.23

Step by Step Solution

1. Step 1: Write the proportion equation
   359,128.49 : 538,700.93 = 106,404.23 : x
2. Step 2: Convert to fraction form
   359,128.49/538,700.93 = 106,404.23/x
3. Step 3: Cross multiply
   359,128.49x = 538,700.93 × 106,404.23
4. Step 4: Simplify right side
   359,128.49x = 57,320,057,656.93
5. Step 5: Solve for x
   x = 57,320,057,656.93/359,128.49
6. Step 6: Final answer
   x = 159,608.78