Finding the Fourth Proportional to 71,743.84, 107,499.12 and 42,188.56

Step by Step Solution

1. Step 1: Write the proportion equation
   71,743.84 : 107,499.12 = 42,188.56 : x
2. Step 2: Convert to fraction form
   71,743.84/107,499.12 = 42,188.56/x
3. Step 3: Cross multiply
   71,743.84x = 107,499.12 × 42,188.56
4. Step 4: Simplify right side
   71,743.84x = 4,535,233,074.07
5. Step 5: Solve for x
   x = 4,535,233,074.07/71,743.84
6. Step 6: Final answer
   x = 63,214.25