Finding the Fourth Proportional to 78,395.56, 108,185.96 and 42,585.57

Step by Step Solution

1. Step 1: Write the proportion equation
   78,395.56 : 108,185.96 = 42,585.57 : x
2. Step 2: Convert to fraction form
   78,395.56/108,185.96 = 42,585.57/x
3. Step 3: Cross multiply
   78,395.56x = 108,185.96 × 42,585.57
4. Step 4: Simplify right side
   78,395.56x = 4,607,160,879.06
5. Step 5: Solve for x
   x = 4,607,160,879.06/78,395.56
6. Step 6: Final answer
   x = 58,768.14