Finding the Fourth Proportional to 71,801.98, 107,671.66 and 21,870.34

Step by Step Solution

1. Step 1: Write the proportion equation
   71,801.98 : 107,671.66 = 21,870.34 : x
2. Step 2: Convert to fraction form
   71,801.98/107,671.66 = 21,870.34/x
3. Step 3: Cross multiply
   71,801.98x = 107,671.66 × 21,870.34
4. Step 4: Simplify right side
   71,801.98x = 2,354,815,812.56
5. Step 5: Solve for x
   x = 2,354,815,812.56/71,801.98
6. Step 6: Final answer
   x = 32,795.97