Finding the Fourth Proportional to 74,485.68, 102,789 and 40,495.02

Step by Step Solution

1. Step 1: Write the proportion equation
   74,485.68 : 102,789 = 40,495.02 : x
2. Step 2: Convert to fraction form
   74,485.68/102,789 = 40,495.02/x
3. Step 3: Cross multiply
   74,485.68x = 102,789 × 40,495.02
4. Step 4: Simplify right side
   74,485.68x = 4,162,442,610.78
5. Step 5: Solve for x
   x = 4,162,442,610.78/74,485.68
6. Step 6: Final answer
   x = 55,882.45