Finding the Fourth Proportional to 71,362.15, 107,048.76 and 21,438.34

Step by Step Solution

1. Step 1: Write the proportion equation
   71,362.15 : 107,048.76 = 21,438.34 : x
2. Step 2: Convert to fraction form
   71,362.15/107,048.76 = 21,438.34/x
3. Step 3: Cross multiply
   71,362.15x = 107,048.76 × 21,438.34
4. Step 4: Simplify right side
   71,362.15x = 2,294,947,713.46
5. Step 5: Solve for x
   x = 2,294,947,713.46/71,362.15
6. Step 6: Final answer
   x = 32,159.17