Finding the Fourth Proportional to 83,865.06, 125,819.46 and 31,275

Step by Step Solution

1. Step 1: Write the proportion equation
   83,865.06 : 125,819.46 = 31,275 : x
2. Step 2: Convert to fraction form
   83,865.06/125,819.46 = 31,275/x
3. Step 3: Cross multiply
   83,865.06x = 125,819.46 × 31,275
4. Step 4: Simplify right side
   83,865.06x = 3,935,003,611.50
5. Step 5: Solve for x
   x = 3,935,003,611.50/83,865.06
6. Step 6: Final answer
   x = 46,920.66