Finding the Fourth Proportional to 254,164.73, 381,197.88 and 85,667.31

Step by Step Solution

1. Step 1: Write the proportion equation
   254,164.73 : 381,197.88 = 85,667.31 : x
2. Step 2: Convert to fraction form
   254,164.73/381,197.88 = 85,667.31/x
3. Step 3: Cross multiply
   254,164.73x = 381,197.88 × 85,667.31
4. Step 4: Simplify right side
   254,164.73x = 32,656,196,957.30
5. Step 5: Solve for x
   x = 32,656,196,957.30/254,164.73
6. Step 6: Final answer
   x = 128,484.38