Finding the Fourth Proportional to 31,043.71, 42,848.56 and 19,117.04

Step by Step Solution

1. Step 1: Write the proportion equation
   31,043.71 : 42,848.56 = 19,117.04 : x
2. Step 2: Convert to fraction form
   31,043.71/42,848.56 = 19,117.04/x
3. Step 3: Cross multiply
   31,043.71x = 42,848.56 × 19,117.04
4. Step 4: Simplify right side
   31,043.71x = 819,137,539.88
5. Step 5: Solve for x
   x = 819,137,539.88/31,043.71
6. Step 6: Final answer
   x = 26,386.59