Finding the Fourth Proportional to 286,300.80, 395,105.04 and 158,978.52

Step by Step Solution

1. Step 1: Write the proportion equation
   286,300.80 : 395,105.04 = 158,978.52 : x
2. Step 2: Convert to fraction form
   286,300.80/395,105.04 = 158,978.52/x
3. Step 3: Cross multiply
   286,300.80x = 395,105.04 × 158,978.52
4. Step 4: Simplify right side
   286,300.80x = 62,813,214,503.74
5. Step 5: Solve for x
   x = 62,813,214,503.74/286,300.80
6. Step 6: Final answer
   x = 219,395.87