Finding the Fourth Proportional to 66,323, 91,603.50 and 43,928.12

Step by Step Solution

1. Step 1: Write the proportion equation
   66,323 : 91,603.50 = 43,928.12 : x
2. Step 2: Convert to fraction form
   66,323/91,603.50 = 43,928.12/x
3. Step 3: Cross multiply
   66,323x = 91,603.50 × 43,928.12
4. Step 4: Simplify right side
   66,323x = 4,023,969,540.42
5. Step 5: Solve for x
   x = 4,023,969,540.42/66,323
6. Step 6: Final answer
   x = 60,672.31