Finding the Fourth Proportional to 30,518.88, 42,117.24 and 17,090.01

Step by Step Solution

1. Step 1: Write the proportion equation
   30,518.88 : 42,117.24 = 17,090.01 : x
2. Step 2: Convert to fraction form
   30,518.88/42,117.24 = 17,090.01/x
3. Step 3: Cross multiply
   30,518.88x = 42,117.24 × 17,090.01
4. Step 4: Simplify right side
   30,518.88x = 719,784,052.77
5. Step 5: Solve for x
   x = 719,784,052.77/30,518.88
6. Step 6: Final answer
   x = 23,584.88