Finding the Fourth Proportional to 28,217.58, 42,327.72 and 23,278.06

Step by Step Solution

1. Step 1: Write the proportion equation
   28,217.58 : 42,327.72 = 23,278.06 : x
2. Step 2: Convert to fraction form
   28,217.58/42,327.72 = 23,278.06/x
3. Step 3: Cross multiply
   28,217.58x = 42,327.72 × 23,278.06
4. Step 4: Simplify right side
   28,217.58x = 985,307,205.82
5. Step 5: Solve for x
   x = 985,307,205.82/28,217.58
6. Step 6: Final answer
   x = 34,918.20