Finding the Fourth Proportional to 353,443.47, 530,197.89 and 143,097.81

Step by Step Solution

1. Step 1: Write the proportion equation
   353,443.47 : 530,197.89 = 143,097.81 : x
2. Step 2: Convert to fraction form
   353,443.47/530,197.89 = 143,097.81/x
3. Step 3: Cross multiply
   353,443.47x = 530,197.89 × 143,097.81
4. Step 4: Simplify right side
   353,443.47x = 75,870,156,925.62
5. Step 5: Solve for x
   x = 75,870,156,925.62/353,443.47
6. Step 6: Final answer
   x = 214,659.95