Finding the Fourth Proportional to 71,744.34, 107,499.87 and 42,189.06

Step by Step Solution

1. Step 1: Write the proportion equation
   71,744.34 : 107,499.87 = 42,189.06 : x
2. Step 2: Convert to fraction form
   71,744.34/107,499.87 = 42,189.06/x
3. Step 3: Cross multiply
   71,744.34x = 107,499.87 × 42,189.06
4. Step 4: Simplify right side
   71,744.34x = 4,535,318,465.42
5. Step 5: Solve for x
   x = 4,535,318,465.42/71,744.34
6. Step 6: Final answer
   x = 63,215.00