Finding the Fourth Proportional to 43,142.56, 64,713.78 and 13,562.98

Step by Step Solution

1. Step 1: Write the proportion equation
   43,142.56 : 64,713.78 = 13,562.98 : x
2. Step 2: Convert to fraction form
   43,142.56/64,713.78 = 13,562.98/x
3. Step 3: Cross multiply
   43,142.56x = 64,713.78 × 13,562.98
4. Step 4: Simplify right side
   43,142.56x = 877,711,703.86
5. Step 5: Solve for x
   x = 877,711,703.86/43,142.56
6. Step 6: Final answer
   x = 20,344.45