Finding the Fourth Proportional to 89,240.68, 123,118.14 and 56,976.48

Step by Step Solution

1. Step 1: Write the proportion equation
   89,240.68 : 123,118.14 = 56,976.48 : x
2. Step 2: Convert to fraction form
   89,240.68/123,118.14 = 56,976.48/x
3. Step 3: Cross multiply
   89,240.68x = 123,118.14 × 56,976.48
4. Step 4: Simplify right side
   89,240.68x = 7,014,838,241.35
5. Step 5: Solve for x
   x = 7,014,838,241.35/89,240.68
6. Step 6: Final answer
   x = 78,605.84