Finding the Fourth Proportional to 66,300.96, 91,494.56 and 39,443.04

Step by Step Solution

1. Step 1: Write the proportion equation
   66,300.96 : 91,494.56 = 39,443.04 : x
2. Step 2: Convert to fraction form
   66,300.96/91,494.56 = 39,443.04/x
3. Step 3: Cross multiply
   66,300.96x = 91,494.56 × 39,443.04
4. Step 4: Simplify right side
   66,300.96x = 3,608,823,589.86
5. Step 5: Solve for x
   x = 3,608,823,589.86/66,300.96
6. Step 6: Final answer
   x = 54,430.94