Finding the Fourth Proportional to 64,899.18, 89,601.41 and 49,762.76

Step by Step Solution

1. Step 1: Write the proportion equation
   64,899.18 : 89,601.41 = 49,762.76 : x
2. Step 2: Convert to fraction form
   64,899.18/89,601.41 = 49,762.76/x
3. Step 3: Cross multiply
   64,899.18x = 89,601.41 × 49,762.76
4. Step 4: Simplify right side
   64,899.18x = 4,458,813,809.90
5. Step 5: Solve for x
   x = 4,458,813,809.90/64,899.18
6. Step 6: Final answer
   x = 68,703.70