Finding the Fourth Proportional to 359,013.56, 538,011.86 and 199,159.35

Step by Step Solution

1. Step 1: Write the proportion equation
   359,013.56 : 538,011.86 = 199,159.35 : x
2. Step 2: Convert to fraction form
   359,013.56/538,011.86 = 199,159.35/x
3. Step 3: Cross multiply
   359,013.56x = 538,011.86 × 199,159.35
4. Step 4: Simplify right side
   359,013.56x = 107,150,092,329.89
5. Step 5: Solve for x
   x = 107,150,092,329.89/359,013.56
6. Step 6: Final answer
   x = 298,456.95