Finding the Fourth Proportional to 236,079.83, 325,789.90 and 128,649.83

Step by Step Solution

1. Step 1: Write the proportion equation
   236,079.83 : 325,789.90 = 128,649.83 : x
2. Step 2: Convert to fraction form
   236,079.83/325,789.90 = 128,649.83/x
3. Step 3: Cross multiply
   236,079.83x = 325,789.90 × 128,649.83
4. Step 4: Simplify right side
   236,079.83x = 41,912,813,300.14
5. Step 5: Solve for x
   x = 41,912,813,300.14/236,079.83
6. Step 6: Final answer
   x = 177,536.61