Finding the Fourth Proportional to 359,068.52, 538,616.40 and 134,405.30

Step by Step Solution

1. Step 1: Write the proportion equation
   359,068.52 : 538,616.40 = 134,405.30 : x
2. Step 2: Convert to fraction form
   359,068.52/538,616.40 = 134,405.30/x
3. Step 3: Cross multiply
   359,068.52x = 538,616.40 × 134,405.30
4. Step 4: Simplify right side
   359,068.52x = 72,392,898,826.92
5. Step 5: Solve for x
   x = 72,392,898,826.92/359,068.52
6. Step 6: Final answer
   x = 201,613.05