Finding the Fourth Proportional to 254,667.18, 381,763.32 and 86,069.61

Step by Step Solution

1. Step 1: Write the proportion equation
   254,667.18 : 381,763.32 = 86,069.61 : x
2. Step 2: Convert to fraction form
   254,667.18/381,763.32 = 86,069.61/x
3. Step 3: Cross multiply
   254,667.18x = 381,763.32 × 86,069.61
4. Step 4: Simplify right side
   254,667.18x = 32,858,220,064.71
5. Step 5: Solve for x
   x = 32,858,220,064.71/254,667.18
6. Step 6: Final answer
   x = 129,024.16