Finding the Fourth Proportional to 74,993.31, 112,433.94 and 45,404.01

Step by Step Solution

1. Step 1: Write the proportion equation
   74,993.31 : 112,433.94 = 45,404.01 : x
2. Step 2: Convert to fraction form
   74,993.31/112,433.94 = 45,404.01/x
3. Step 3: Cross multiply
   74,993.31x = 112,433.94 × 45,404.01
4. Step 4: Simplify right side
   74,993.31x = 5,104,951,736.10
5. Step 5: Solve for x
   x = 5,104,951,736.10/74,993.31
6. Step 6: Final answer
   x = 68,072.10