Finding the Fourth Proportional to 31,055.19, 42,838.63 and 19,116.09

Step by Step Solution

1. Step 1: Write the proportion equation
   31,055.19 : 42,838.63 = 19,116.09 : x
2. Step 2: Convert to fraction form
   31,055.19/42,838.63 = 19,116.09/x
3. Step 3: Cross multiply
   31,055.19x = 42,838.63 × 19,116.09
4. Step 4: Simplify right side
   31,055.19x = 818,907,106.56
5. Step 5: Solve for x
   x = 818,907,106.56/31,055.19
6. Step 6: Final answer
   x = 26,369.41