Finding the Fourth Proportional to 266,100.31, 398,803.91 and 108,144.10

Step by Step Solution

1. Step 1: Write the proportion equation
   266,100.31 : 398,803.91 = 108,144.10 : x
2. Step 2: Convert to fraction form
   266,100.31/398,803.91 = 108,144.10/x
3. Step 3: Cross multiply
   266,100.31x = 398,803.91 × 108,144.10
4. Step 4: Simplify right side
   266,100.31x = 43,128,289,196.78
5. Step 5: Solve for x
   x = 43,128,289,196.78/266,100.31
6. Step 6: Final answer
   x = 162,075.31