Finding the Fourth Proportional to 82,298.89, 123,237.48 and 56,963.31

Step by Step Solution

1. Step 1: Write the proportion equation
   82,298.89 : 123,237.48 = 56,963.31 : x
2. Step 2: Convert to fraction form
   82,298.89/123,237.48 = 56,963.31/x
3. Step 3: Cross multiply
   82,298.89x = 123,237.48 × 56,963.31
4. Step 4: Simplify right side
   82,298.89x = 7,020,014,776.86
5. Step 5: Solve for x
   x = 7,020,014,776.86/82,298.89
6. Step 6: Final answer
   x = 85,299.02