Finding the Fourth Proportional to 265,845.47, 398,607.54 and 105,945.99

Step by Step Solution

1. Step 1: Write the proportion equation
   265,845.47 : 398,607.54 = 105,945.99 : x
2. Step 2: Convert to fraction form
   265,845.47/398,607.54 = 105,945.99/x
3. Step 3: Cross multiply
   265,845.47x = 398,607.54 × 105,945.99
4. Step 4: Simplify right side
   265,845.47x = 42,230,870,446.76
5. Step 5: Solve for x
   x = 42,230,870,446.76/265,845.47
6. Step 6: Final answer
   x = 158,854.96