Finding the Fourth Proportional to 31,118.79, 46,685.49 and 19,124.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,118.79 : 46,685.49 = 19,124.31 : x
2. Step 2: Convert to fraction form
   31,118.79/46,685.49 = 19,124.31/x
3. Step 3: Cross multiply
   31,118.79x = 46,685.49 × 19,124.31
4. Step 4: Simplify right side
   31,118.79x = 892,827,783.26
5. Step 5: Solve for x
   x = 892,827,783.26/31,118.79
6. Step 6: Final answer
   x = 28,690.95