Finding the Fourth Proportional to 186,480.54, 257,338.17 and 105,911.46

Step by Step Solution

1. Step 1: Write the proportion equation
   186,480.54 : 257,338.17 = 105,911.46 : x
2. Step 2: Convert to fraction form
   186,480.54/257,338.17 = 105,911.46/x
3. Step 3: Cross multiply
   186,480.54x = 257,338.17 × 105,911.46
4. Step 4: Simplify right side
   186,480.54x = 27,255,061,298.43
5. Step 5: Solve for x
   x = 27,255,061,298.43/186,480.54
6. Step 6: Final answer
   x = 146,154.99