Finding the Fourth Proportional to 71,300.07, 106,936.47 and 21,380.18

Step by Step Solution

1. Step 1: Write the proportion equation
   71,300.07 : 106,936.47 = 21,380.18 : x
2. Step 2: Convert to fraction form
   71,300.07/106,936.47 = 21,380.18/x
3. Step 3: Cross multiply
   71,300.07x = 106,936.47 × 21,380.18
4. Step 4: Simplify right side
   71,300.07x = 2,286,320,442.48
5. Step 5: Solve for x
   x = 2,286,320,442.48/71,300.07
6. Step 6: Final answer
   x = 32,066.17