Finding the Fourth Proportional to 66,411.43, 91,649.72 and 36,198.72

Step by Step Solution

1. Step 1: Write the proportion equation
   66,411.43 : 91,649.72 = 36,198.72 : x
2. Step 2: Convert to fraction form
   66,411.43/91,649.72 = 36,198.72/x
3. Step 3: Cross multiply
   66,411.43x = 91,649.72 × 36,198.72
4. Step 4: Simplify right side
   66,411.43x = 3,317,602,642.86
5. Step 5: Solve for x
   x = 3,317,602,642.86/66,411.43
6. Step 6: Final answer
   x = 49,955.30