Finding the Fourth Proportional to 30,973.39, 42,665.12 and 24,988.30

Step by Step Solution

1. Step 1: Write the proportion equation
   30,973.39 : 42,665.12 = 24,988.30 : x
2. Step 2: Convert to fraction form
   30,973.39/42,665.12 = 24,988.30/x
3. Step 3: Cross multiply
   30,973.39x = 42,665.12 × 24,988.30
4. Step 4: Simplify right side
   30,973.39x = 1,066,128,818.10
5. Step 5: Solve for x
   x = 1,066,128,818.10/30,973.39
6. Step 6: Final answer
   x = 34,420.80