Finding the Fourth Proportional to 123,769.86, 185,516.55 and 113,805.78

Step by Step Solution

1. Step 1: Write the proportion equation
   123,769.86 : 185,516.55 = 113,805.78 : x
2. Step 2: Convert to fraction form
   123,769.86/185,516.55 = 113,805.78/x
3. Step 3: Cross multiply
   123,769.86x = 185,516.55 × 113,805.78
4. Step 4: Simplify right side
   123,769.86x = 21,112,855,675.66
5. Step 5: Solve for x
   x = 21,112,855,675.66/123,769.86
6. Step 6: Final answer
   x = 170,581.56