Finding the Fourth Proportional to 78,928.50, 108,928.82 and 43,123.91

Step by Step Solution

1. Step 1: Write the proportion equation
   78,928.50 : 108,928.82 = 43,123.91 : x
2. Step 2: Convert to fraction form
   78,928.50/108,928.82 = 43,123.91/x
3. Step 3: Cross multiply
   78,928.50x = 108,928.82 × 43,123.91
4. Step 4: Simplify right side
   78,928.50x = 4,697,436,193.25
5. Step 5: Solve for x
   x = 4,697,436,193.25/78,928.50
6. Step 6: Final answer
   x = 59,515.08