Finding the Fourth Proportional to 83,979, 125,981.46 and 31,395.96

Step by Step Solution

1. Step 1: Write the proportion equation
   83,979 : 125,981.46 = 31,395.96 : x
2. Step 2: Convert to fraction form
   83,979/125,981.46 = 31,395.96/x
3. Step 3: Cross multiply
   83,979x = 125,981.46 × 31,395.96
4. Step 4: Simplify right side
   83,979x = 3,955,308,878.90
5. Step 5: Solve for x
   x = 3,955,308,878.90/83,979
6. Step 6: Final answer
   x = 47,098.79