Finding the Fourth Proportional to 354,443.84, 531,451.61 and 141,244.55

Step by Step Solution

1. Step 1: Write the proportion equation
   354,443.84 : 531,451.61 = 141,244.55 : x
2. Step 2: Convert to fraction form
   354,443.84/531,451.61 = 141,244.55/x
3. Step 3: Cross multiply
   354,443.84x = 531,451.61 × 141,244.55
4. Step 4: Simplify right side
   354,443.84x = 75,064,643,501.23
5. Step 5: Solve for x
   x = 75,064,643,501.23/354,443.84
6. Step 6: Final answer
   x = 211,781.49