Finding the Fourth Proportional to 31,151.69, 42,994.91 and 18,577.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,151.69 : 42,994.91 = 18,577.25 : x
2. Step 2: Convert to fraction form
   31,151.69/42,994.91 = 18,577.25/x
3. Step 3: Cross multiply
   31,151.69x = 42,994.91 × 18,577.25
4. Step 4: Simplify right side
   31,151.69x = 798,727,191.80
5. Step 5: Solve for x
   x = 798,727,191.80/31,151.69
6. Step 6: Final answer
   x = 25,639.93