Finding the Fourth Proportional to 67,518.20, 93,177.42 and 42,381.56

Step by Step Solution

1. Step 1: Write the proportion equation
   67,518.20 : 93,177.42 = 42,381.56 : x
2. Step 2: Convert to fraction form
   67,518.20/93,177.42 = 42,381.56/x
3. Step 3: Cross multiply
   67,518.20x = 93,177.42 × 42,381.56
4. Step 4: Simplify right side
   67,518.20x = 3,949,004,416.38
5. Step 5: Solve for x
   x = 3,949,004,416.38/67,518.20
6. Step 6: Final answer
   x = 58,488.00