Finding the Fourth Proportional to 58,638.72, 80,901.28 and 33,142.08

Step by Step Solution

1. Step 1: Write the proportion equation
   58,638.72 : 80,901.28 = 33,142.08 : x
2. Step 2: Convert to fraction form
   58,638.72/80,901.28 = 33,142.08/x
3. Step 3: Cross multiply
   58,638.72x = 80,901.28 × 33,142.08
4. Step 4: Simplify right side
   58,638.72x = 2,681,236,693.86
5. Step 5: Solve for x
   x = 2,681,236,693.86/58,638.72
6. Step 6: Final answer
   x = 45,724.68