Finding the Fourth Proportional to 64,900.18, 89,602.79 and 49,763.76

Step by Step Solution

1. Step 1: Write the proportion equation
   64,900.18 : 89,602.79 = 49,763.76 : x
2. Step 2: Convert to fraction form
   64,900.18/89,602.79 = 49,763.76/x
3. Step 3: Cross multiply
   64,900.18x = 89,602.79 × 49,763.76
4. Step 4: Simplify right side
   64,900.18x = 4,458,971,736.89
5. Step 5: Solve for x
   x = 4,458,971,736.89/64,900.18
6. Step 6: Final answer
   x = 68,705.08