Finding the Fourth Proportional to 31,152.10, 46,680.29 and 21,143.83

Step by Step Solution

1. Step 1: Write the proportion equation
   31,152.10 : 46,680.29 = 21,143.83 : x
2. Step 2: Convert to fraction form
   31,152.10/46,680.29 = 21,143.83/x
3. Step 3: Cross multiply
   31,152.10x = 46,680.29 × 21,143.83
4. Step 4: Simplify right side
   31,152.10x = 986,999,893.69
5. Step 5: Solve for x
   x = 986,999,893.69/31,152.10
6. Step 6: Final answer
   x = 31,683.26