Finding the Fourth Proportional to 78,878.82, 108,857.18 and 43,072.15

Step by Step Solution

1. Step 1: Write the proportion equation
   78,878.82 : 108,857.18 = 43,072.15 : x
2. Step 2: Convert to fraction form
   78,878.82/108,857.18 = 43,072.15/x
3. Step 3: Cross multiply
   78,878.82x = 108,857.18 × 43,072.15
4. Step 4: Simplify right side
   78,878.82x = 4,688,712,570.18
5. Step 5: Solve for x
   x = 4,688,712,570.18/78,878.82
6. Step 6: Final answer
   x = 59,441.98