Finding the Fourth Proportional to 265,846.96, 398,609.78 and 105,947.50

Step by Step Solution

1. Step 1: Write the proportion equation
   265,846.96 : 398,609.78 = 105,947.50 : x
2. Step 2: Convert to fraction form
   265,846.96/398,609.78 = 105,947.50/x
3. Step 3: Cross multiply
   265,846.96x = 398,609.78 × 105,947.50
4. Step 4: Simplify right side
   265,846.96x = 42,231,709,666.55
5. Step 5: Solve for x
   x = 42,231,709,666.55/265,846.96
6. Step 6: Final answer
   x = 158,857.22