Finding the Fourth Proportional to 30,680.34, 42,326.88 and 17,248.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,680.34 : 42,326.88 = 17,248.50 : x
2. Step 2: Convert to fraction form
   30,680.34/42,326.88 = 17,248.50/x
3. Step 3: Cross multiply
   30,680.34x = 42,326.88 × 17,248.50
4. Step 4: Simplify right side
   30,680.34x = 730,075,189.68
5. Step 5: Solve for x
   x = 730,075,189.68/30,680.34
6. Step 6: Final answer
   x = 23,796.19