Finding the Fourth Proportional to 78,315.47, 108,072.59 and 42,504.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,315.47 : 108,072.59 = 42,504.76 : x
2. Step 2: Convert to fraction form
   78,315.47/108,072.59 = 42,504.76/x
3. Step 3: Cross multiply
   78,315.47x = 108,072.59 × 42,504.76
4. Step 4: Simplify right side
   78,315.47x = 4,593,599,500.53
5. Step 5: Solve for x
   x = 4,593,599,500.53/78,315.47
6. Step 6: Final answer
   x = 58,655.07