Finding the Fourth Proportional to 83,401.28, 125,101.88 and 21,071.76

Step by Step Solution

1. Step 1: Write the proportion equation
   83,401.28 : 125,101.88 = 21,071.76 : x
2. Step 2: Convert to fraction form
   83,401.28/125,101.88 = 21,071.76/x
3. Step 3: Cross multiply
   83,401.28x = 125,101.88 × 21,071.76
4. Step 4: Simplify right side
   83,401.28x = 2,636,116,790.91
5. Step 5: Solve for x
   x = 2,636,116,790.91/83,401.28
6. Step 6: Final answer
   x = 31,607.63