Finding the Fourth Proportional to 78,145.54, 107,840.72 and 42,336.46

Step by Step Solution

1. Step 1: Write the proportion equation
   78,145.54 : 107,840.72 = 42,336.46 : x
2. Step 2: Convert to fraction form
   78,145.54/107,840.72 = 42,336.46/x
3. Step 3: Cross multiply
   78,145.54x = 107,840.72 × 42,336.46
4. Step 4: Simplify right side
   78,145.54x = 4,565,594,116.97
5. Step 5: Solve for x
   x = 4,565,594,116.97/78,145.54
6. Step 6: Final answer
   x = 58,424.24