Finding the Fourth Proportional to 83,989, 125,996.46 and 31,405.96

Step by Step Solution

1. Step 1: Write the proportion equation
   83,989 : 125,996.46 = 31,405.96 : x
2. Step 2: Convert to fraction form
   83,989/125,996.46 = 31,405.96/x
3. Step 3: Cross multiply
   83,989x = 125,996.46 × 31,405.96
4. Step 4: Simplify right side
   83,989x = 3,957,039,782.90
5. Step 5: Solve for x
   x = 3,957,039,782.90/83,989
6. Step 6: Final answer
   x = 47,113.79