Finding the Fourth Proportional to 71,150.90, 106,737.86 and 21,891.38

Step by Step Solution

1. Step 1: Write the proportion equation
   71,150.90 : 106,737.86 = 21,891.38 : x
2. Step 2: Convert to fraction form
   71,150.90/106,737.86 = 21,891.38/x
3. Step 3: Cross multiply
   71,150.90x = 106,737.86 × 21,891.38
4. Step 4: Simplify right side
   71,150.90x = 2,336,638,574.69
5. Step 5: Solve for x
   x = 2,336,638,574.69/71,150.90
6. Step 6: Final answer
   x = 32,840.61