Finding the Fourth Proportional to 30,780.58, 42,419.18 and 22,268.23

Step by Step Solution

1. Step 1: Write the proportion equation
   30,780.58 : 42,419.18 = 22,268.23 : x
2. Step 2: Convert to fraction form
   30,780.58/42,419.18 = 22,268.23/x
3. Step 3: Cross multiply
   30,780.58x = 42,419.18 × 22,268.23
4. Step 4: Simplify right side
   30,780.58x = 944,600,056.65
5. Step 5: Solve for x
   x = 944,600,056.65/30,780.58
6. Step 6: Final answer
   x = 30,688.18