Finding the Fourth Proportional to 78,068.41, 107,734.47 and 42,258.31

Step by Step Solution

1. Step 1: Write the proportion equation
   78,068.41 : 107,734.47 = 42,258.31 : x
2. Step 2: Convert to fraction form
   78,068.41/107,734.47 = 42,258.31/x
3. Step 3: Cross multiply
   78,068.41x = 107,734.47 × 42,258.31
4. Step 4: Simplify right side
   78,068.41x = 4,552,676,630.95
5. Step 5: Solve for x
   x = 4,552,676,630.95/78,068.41
6. Step 6: Final answer
   x = 58,316.50