Finding the Fourth Proportional to 65,830.31, 98,755.68 and 21,446.72

Step by Step Solution

1. Step 1: Write the proportion equation
   65,830.31 : 98,755.68 = 21,446.72 : x
2. Step 2: Convert to fraction form
   65,830.31/98,755.68 = 21,446.72/x
3. Step 3: Cross multiply
   65,830.31x = 98,755.68 × 21,446.72
4. Step 4: Simplify right side
   65,830.31x = 2,117,985,417.37
5. Step 5: Solve for x
   x = 2,117,985,417.37/65,830.31
6. Step 6: Final answer
   x = 32,173.41