Finding the Fourth Proportional to 42,924.96, 59,174.28 and 30,139.20

Step by Step Solution

1. Step 1: Write the proportion equation
   42,924.96 : 59,174.28 = 30,139.20 : x
2. Step 2: Convert to fraction form
   42,924.96/59,174.28 = 30,139.20/x
3. Step 3: Cross multiply
   42,924.96x = 59,174.28 × 30,139.20
4. Step 4: Simplify right side
   42,924.96x = 1,783,465,459.78
5. Step 5: Solve for x
   x = 1,783,465,459.78/42,924.96
6. Step 6: Final answer
   x = 41,548.45