Finding the Fourth Proportional to 58,738.50, 81,126.42 and 38,685

Step by Step Solution

1. Step 1: Write the proportion equation
   58,738.50 : 81,126.42 = 38,685 : x
2. Step 2: Convert to fraction form
   58,738.50/81,126.42 = 38,685/x
3. Step 3: Cross multiply
   58,738.50x = 81,126.42 × 38,685
4. Step 4: Simplify right side
   58,738.50x = 3,138,375,557.70
5. Step 5: Solve for x
   x = 3,138,375,557.70/58,738.50
6. Step 6: Final answer
   x = 53,429.62