Finding the Fourth Proportional to 72,716.40, 100,314.94 and 42,503

Step by Step Solution

1. Step 1: Write the proportion equation
   72,716.40 : 100,314.94 = 42,503 : x
2. Step 2: Convert to fraction form
   72,716.40/100,314.94 = 42,503/x
3. Step 3: Cross multiply
   72,716.40x = 100,314.94 × 42,503
4. Step 4: Simplify right side
   72,716.40x = 4,263,685,894.82
5. Step 5: Solve for x
   x = 4,263,685,894.82/72,716.40
6. Step 6: Final answer
   x = 58,634.45