Finding the Fourth Proportional to 45,499.12, 68,494.37 and 40,921.63

Step by Step Solution

1. Step 1: Write the proportion equation
   45,499.12 : 68,494.37 = 40,921.63 : x
2. Step 2: Convert to fraction form
   45,499.12/68,494.37 = 40,921.63/x
3. Step 3: Cross multiply
   45,499.12x = 68,494.37 × 40,921.63
4. Step 4: Simplify right side
   45,499.12x = 2,802,900,890.38
5. Step 5: Solve for x
   x = 2,802,900,890.38/45,499.12
6. Step 6: Final answer
   x = 61,603.41