Finding the Fourth Proportional to 65,829.31, 98,754.18 and 21,445.72

Step by Step Solution

1. Step 1: Write the proportion equation
   65,829.31 : 98,754.18 = 21,445.72 : x
2. Step 2: Convert to fraction form
   65,829.31/98,754.18 = 21,445.72/x
3. Step 3: Cross multiply
   65,829.31x = 98,754.18 × 21,445.72
4. Step 4: Simplify right side
   65,829.31x = 2,117,854,493.11
5. Step 5: Solve for x
   x = 2,117,854,493.11/65,829.31
6. Step 6: Final answer
   x = 32,171.91