Finding the Fourth Proportional to 71,325.15, 107,005.50 and 21,406.17

Step by Step Solution

1. Step 1: Write the proportion equation
   71,325.15 : 107,005.50 = 21,406.17 : x
2. Step 2: Convert to fraction form
   71,325.15/107,005.50 = 21,406.17/x
3. Step 3: Cross multiply
   71,325.15x = 107,005.50 × 21,406.17
4. Step 4: Simplify right side
   71,325.15x = 2,290,577,816.90
5. Step 5: Solve for x
   x = 2,290,577,816.90/71,325.15
6. Step 6: Final answer
   x = 32,114.59