Finding the Fourth Proportional to 52,390.82, 72,243.42 and 38,939.96

Step by Step Solution

1. Step 1: Write the proportion equation
   52,390.82 : 72,243.42 = 38,939.96 : x
2. Step 2: Convert to fraction form
   52,390.82/72,243.42 = 38,939.96/x
3. Step 3: Cross multiply
   52,390.82x = 72,243.42 × 38,939.96
4. Step 4: Simplify right side
   52,390.82x = 2,813,155,885.06
5. Step 5: Solve for x
   x = 2,813,155,885.06/52,390.82
6. Step 6: Final answer
   x = 53,695.59