Finding the Fourth Proportional to 83,139.60, 124,725.60 and 33,211.20

Step by Step Solution

1. Step 1: Write the proportion equation
   83,139.60 : 124,725.60 = 33,211.20 : x
2. Step 2: Convert to fraction form
   83,139.60/124,725.60 = 33,211.20/x
3. Step 3: Cross multiply
   83,139.60x = 124,725.60 × 33,211.20
4. Step 4: Simplify right side
   83,139.60x = 4,142,286,846.72
5. Step 5: Solve for x
   x = 4,142,286,846.72/83,139.60
6. Step 6: Final answer
   x = 49,823.27