Finding the Fourth Proportional to 359,128.88, 538,698.89 and 106,434.80

Step by Step Solution

1. Step 1: Write the proportion equation
   359,128.88 : 538,698.89 = 106,434.80 : x
2. Step 2: Convert to fraction form
   359,128.88/538,698.89 = 106,434.80/x
3. Step 3: Cross multiply
   359,128.88x = 538,698.89 × 106,434.80
4. Step 4: Simplify right side
   359,128.88x = 57,336,308,617.37
5. Step 5: Solve for x
   x = 57,336,308,617.37/359,128.88
6. Step 6: Final answer
   x = 159,653.85