Finding the Fourth Proportional to 266,100.08, 398,804.52 and 108,144.72

Step by Step Solution

1. Step 1: Write the proportion equation
   266,100.08 : 398,804.52 = 108,144.72 : x
2. Step 2: Convert to fraction form
   266,100.08/398,804.52 = 108,144.72/x
3. Step 3: Cross multiply
   266,100.08x = 398,804.52 × 108,144.72
4. Step 4: Simplify right side
   266,100.08x = 43,128,603,150.13
5. Step 5: Solve for x
   x = 43,128,603,150.13/266,100.08
6. Step 6: Final answer
   x = 162,076.63