Finding the Fourth Proportional to 64,796.63, 89,449.31 and 45,691.97

Step by Step Solution

1. Step 1: Write the proportion equation
   64,796.63 : 89,449.31 = 45,691.97 : x
2. Step 2: Convert to fraction form
   64,796.63/89,449.31 = 45,691.97/x
3. Step 3: Cross multiply
   64,796.63x = 89,449.31 × 45,691.97
4. Step 4: Simplify right side
   64,796.63x = 4,087,114,856.02
5. Step 5: Solve for x
   x = 4,087,114,856.02/64,796.63
6. Step 6: Final answer
   x = 63,076.05