Finding the Fourth Proportional to 78,295.59, 108,046.98 and 42,485.31

Step by Step Solution

1. Step 1: Write the proportion equation
   78,295.59 : 108,046.98 = 42,485.31 : x
2. Step 2: Convert to fraction form
   78,295.59/108,046.98 = 42,485.31/x
3. Step 3: Cross multiply
   78,295.59x = 108,046.98 × 42,485.31
4. Step 4: Simplify right side
   78,295.59x = 4,590,409,439.86
5. Step 5: Solve for x
   x = 4,590,409,439.86/78,295.59
6. Step 6: Final answer
   x = 58,629.22