Finding the Fourth Proportional to 359,103.74, 538,672.01 and 134,405.89

Step by Step Solution

1. Step 1: Write the proportion equation
   359,103.74 : 538,672.01 = 134,405.89 : x
2. Step 2: Convert to fraction form
   359,103.74/538,672.01 = 134,405.89/x
3. Step 3: Cross multiply
   359,103.74x = 538,672.01 × 134,405.89
4. Step 4: Simplify right side
   359,103.74x = 72,400,688,903.43
5. Step 5: Solve for x
   x = 72,400,688,903.43/359,103.74
6. Step 6: Final answer
   x = 201,614.97