Finding the Fourth Proportional to 103,321.71, 154,962.18 and 28,422.54

Step by Step Solution

1. Step 1: Write the proportion equation
   103,321.71 : 154,962.18 = 28,422.54 : x
2. Step 2: Convert to fraction form
   103,321.71/154,962.18 = 28,422.54/x
3. Step 3: Cross multiply
   103,321.71x = 154,962.18 × 28,422.54
4. Step 4: Simplify right side
   103,321.71x = 4,404,418,759.54
5. Step 5: Solve for x
   x = 4,404,418,759.54/103,321.71
6. Step 6: Final answer
   x = 42,628.20