Finding the Fourth Proportional to 65,691, 98,552.03 and 21,317.67

Step by Step Solution

1. Step 1: Write the proportion equation
   65,691 : 98,552.03 = 21,317.67 : x
2. Step 2: Convert to fraction form
   65,691/98,552.03 = 21,317.67/x
3. Step 3: Cross multiply
   65,691x = 98,552.03 × 21,317.67
4. Step 4: Simplify right side
   65,691x = 2,100,899,546.78
5. Step 5: Solve for x
   x = 2,100,899,546.78/65,691
6. Step 6: Final answer
   x = 31,981.54