Finding the Fourth Proportional to 42,728.38, 58,877.49 and 38,471.02

Step by Step Solution

1. Step 1: Write the proportion equation
   42,728.38 : 58,877.49 = 38,471.02 : x
2. Step 2: Convert to fraction form
   42,728.38/58,877.49 = 38,471.02/x
3. Step 3: Cross multiply
   42,728.38x = 58,877.49 × 38,471.02
4. Step 4: Simplify right side
   42,728.38x = 2,265,077,095.34
5. Step 5: Solve for x
   x = 2,265,077,095.34/42,728.38
6. Step 6: Final answer
   x = 53,011.07