Finding the Fourth Proportional to 266,915.56, 400,375.98 and 109,036.12

Step by Step Solution

1. Step 1: Write the proportion equation
   266,915.56 : 400,375.98 = 109,036.12 : x
2. Step 2: Convert to fraction form
   266,915.56/400,375.98 = 109,036.12/x
3. Step 3: Cross multiply
   266,915.56x = 400,375.98 × 109,036.12
4. Step 4: Simplify right side
   266,915.56x = 43,655,443,400.40
5. Step 5: Solve for x
   x = 43,655,443,400.40/266,915.56
6. Step 6: Final answer
   x = 163,555.26