Finding the Fourth Proportional to 65,863.39, 98,810.73 and 21,490.15

Step by Step Solution

1. Step 1: Write the proportion equation
   65,863.39 : 98,810.73 = 21,490.15 : x
2. Step 2: Convert to fraction form
   65,863.39/98,810.73 = 21,490.15/x
3. Step 3: Cross multiply
   65,863.39x = 98,810.73 × 21,490.15
4. Step 4: Simplify right side
   65,863.39x = 2,123,457,409.31
5. Step 5: Solve for x
   x = 2,123,457,409.31/65,863.39
6. Step 6: Final answer
   x = 32,240.33