Finding the Fourth Proportional to 266,619.78, 399,930.06 and 106,767.69

Step by Step Solution

1. Step 1: Write the proportion equation
   266,619.78 : 399,930.06 = 106,767.69 : x
2. Step 2: Convert to fraction form
   266,619.78/399,930.06 = 106,767.69/x
3. Step 3: Cross multiply
   266,619.78x = 399,930.06 × 106,767.69
4. Step 4: Simplify right side
   266,619.78x = 42,699,608,667.76
5. Step 5: Solve for x
   x = 42,699,608,667.76/266,619.78
6. Step 6: Final answer
   x = 160,151.69