Finding the Fourth Proportional to 71,342.69, 107,030.43 and 21,423.72

Step by Step Solution

1. Step 1: Write the proportion equation
   71,342.69 : 107,030.43 = 21,423.72 : x
2. Step 2: Convert to fraction form
   71,342.69/107,030.43 = 21,423.72/x
3. Step 3: Cross multiply
   71,342.69x = 107,030.43 × 21,423.72
4. Step 4: Simplify right side
   71,342.69x = 2,292,990,284.82
5. Step 5: Solve for x
   x = 2,292,990,284.82/71,342.69
6. Step 6: Final answer
   x = 32,140.51