Finding the Fourth Proportional to 148,478.71, 221,902.49 and 108,581.45

Step by Step Solution

1. Step 1: Write the proportion equation
   148,478.71 : 221,902.49 = 108,581.45 : x
2. Step 2: Convert to fraction form
   148,478.71/221,902.49 = 108,581.45/x
3. Step 3: Cross multiply
   148,478.71x = 221,902.49 × 108,581.45
4. Step 4: Simplify right side
   148,478.71x = 24,094,494,949.02
5. Step 5: Solve for x
   x = 24,094,494,949.02/148,478.71
6. Step 6: Final answer
   x = 162,275.75