Finding the Fourth Proportional to 31,117.79, 46,683.98 and 19,123.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,117.79 : 46,683.98 = 19,123.31 : x
2. Step 2: Convert to fraction form
   31,117.79/46,683.98 = 19,123.31/x
3. Step 3: Cross multiply
   31,117.79x = 46,683.98 × 19,123.31
4. Step 4: Simplify right side
   31,117.79x = 892,752,221.57
5. Step 5: Solve for x
   x = 892,752,221.57/31,117.79
6. Step 6: Final answer
   x = 28,689.45