Finding the Fourth Proportional to 65,806.53, 98,699.46 and 21,432.90

Step by Step Solution

1. Step 1: Write the proportion equation
   65,806.53 : 98,699.46 = 21,432.90 : x
2. Step 2: Convert to fraction form
   65,806.53/98,699.46 = 21,432.90/x
3. Step 3: Cross multiply
   65,806.53x = 98,699.46 × 21,432.90
4. Step 4: Simplify right side
   65,806.53x = 2,115,416,066.54
5. Step 5: Solve for x
   x = 2,115,416,066.54/65,806.53
6. Step 6: Final answer
   x = 32,145.99