Finding the Fourth Proportional to 65,674, 98,485.48 and 21,290.05

Step by Step Solution

1. Step 1: Write the proportion equation
   65,674 : 98,485.48 = 21,290.05 : x
2. Step 2: Convert to fraction form
   65,674/98,485.48 = 21,290.05/x
3. Step 3: Cross multiply
   65,674x = 98,485.48 × 21,290.05
4. Step 4: Simplify right side
   65,674x = 2,096,760,793.47
5. Step 5: Solve for x
   x = 2,096,760,793.47/65,674
6. Step 6: Final answer
   x = 31,926.80