Finding the Fourth Proportional to 123,750.82, 170,766.72 and 72,765.64

Step by Step Solution

1. Step 1: Write the proportion equation
   123,750.82 : 170,766.72 = 72,765.64 : x
2. Step 2: Convert to fraction form
   123,750.82/170,766.72 = 72,765.64/x
3. Step 3: Cross multiply
   123,750.82x = 170,766.72 × 72,765.64
4. Step 4: Simplify right side
   123,750.82x = 12,425,949,671.50
5. Step 5: Solve for x
   x = 12,425,949,671.50/123,750.82
6. Step 6: Final answer
   x = 100,411.05