Finding the Fourth Proportional to 73,979.55, 102,049.34 and 42,142.50

Step by Step Solution

1. Step 1: Write the proportion equation
   73,979.55 : 102,049.34 = 42,142.50 : x
2. Step 2: Convert to fraction form
   73,979.55/102,049.34 = 42,142.50/x
3. Step 3: Cross multiply
   73,979.55x = 102,049.34 × 42,142.50
4. Step 4: Simplify right side
   73,979.55x = 4,300,614,100.24
5. Step 5: Solve for x
   x = 4,300,614,100.24/73,979.55
6. Step 6: Final answer
   x = 58,132.47