Finding the Fourth Proportional to 236,074.83, 354,041.96 and 86,280.14

Step by Step Solution

1. Step 1: Write the proportion equation
   236,074.83 : 354,041.96 = 86,280.14 : x
2. Step 2: Convert to fraction form
   236,074.83/354,041.96 = 86,280.14/x
3. Step 3: Cross multiply
   236,074.83x = 354,041.96 × 86,280.14
4. Step 4: Simplify right side
   236,074.83x = 30,546,789,064.88
5. Step 5: Solve for x
   x = 30,546,789,064.88/236,074.83
6. Step 6: Final answer
   x = 129,394.52