Finding the Fourth Proportional to 83,308.72, 124,961.40 and 20,977.52

Step by Step Solution

1. Step 1: Write the proportion equation
   83,308.72 : 124,961.40 = 20,977.52 : x
2. Step 2: Convert to fraction form
   83,308.72/124,961.40 = 20,977.52/x
3. Step 3: Cross multiply
   83,308.72x = 124,961.40 × 20,977.52
4. Step 4: Simplify right side
   83,308.72x = 2,621,380,267.73
5. Step 5: Solve for x
   x = 2,621,380,267.73/83,308.72
6. Step 6: Final answer
   x = 31,465.86