Finding the Fourth Proportional to 83,106.21, 124,659.27 and 20,776.71

Step by Step Solution

1. Step 1: Write the proportion equation
   83,106.21 : 124,659.27 = 20,776.71 : x
2. Step 2: Convert to fraction form
   83,106.21/124,659.27 = 20,776.71/x
3. Step 3: Cross multiply
   83,106.21x = 124,659.27 × 20,776.71
4. Step 4: Simplify right side
   83,106.21x = 2,590,009,501.60
5. Step 5: Solve for x
   x = 2,590,009,501.60/83,106.21
6. Step 6: Final answer
   x = 31,165.05