Finding the Fourth Proportional to 78,394.41, 108,185.04 and 42,585.12

Step by Step Solution

1. Step 1: Write the proportion equation
   78,394.41 : 108,185.04 = 42,585.12 : x
2. Step 2: Convert to fraction form
   78,394.41/108,185.04 = 42,585.12/x
3. Step 3: Cross multiply
   78,394.41x = 108,185.04 × 42,585.12
4. Step 4: Simplify right side
   78,394.41x = 4,607,072,910.60
5. Step 5: Solve for x
   x = 4,607,072,910.60/78,394.41
6. Step 6: Final answer
   x = 58,767.88