Finding the Fourth Proportional to 381,667.08, 572,448.78 and 145,069.32

Step by Step Solution

1. Step 1: Write the proportion equation
   381,667.08 : 572,448.78 = 145,069.32 : x
2. Step 2: Convert to fraction form
   381,667.08/572,448.78 = 145,069.32/x
3. Step 3: Cross multiply
   381,667.08x = 572,448.78 × 145,069.32
4. Step 4: Simplify right side
   381,667.08x = 83,044,755,249.43
5. Step 5: Solve for x
   x = 83,044,755,249.43/381,667.08
6. Step 6: Final answer
   x = 217,584.28