Finding the Fourth Proportional to 30,549.32, 42,158.57 and 17,123.57

Step by Step Solution

1. Step 1: Write the proportion equation
   30,549.32 : 42,158.57 = 17,123.57 : x
2. Step 2: Convert to fraction form
   30,549.32/42,158.57 = 17,123.57/x
3. Step 3: Cross multiply
   30,549.32x = 42,158.57 × 17,123.57
4. Step 4: Simplify right side
   30,549.32x = 721,904,928.08
5. Step 5: Solve for x
   x = 721,904,928.08/30,549.32
6. Step 6: Final answer
   x = 23,630.81