Finding the Fourth Proportional to 71,164.52, 106,758.30 and 21,905

Step by Step Solution

1. Step 1: Write the proportion equation
   71,164.52 : 106,758.30 = 21,905 : x
2. Step 2: Convert to fraction form
   71,164.52/106,758.30 = 21,905/x
3. Step 3: Cross multiply
   71,164.52x = 106,758.30 × 21,905
4. Step 4: Simplify right side
   71,164.52x = 2,338,540,561.50
5. Step 5: Solve for x
   x = 2,338,540,561.50/71,164.52
6. Step 6: Final answer
   x = 32,861.05