Finding the Fourth Proportional to 65,784, 98,680.89 and 21,407.34

Step by Step Solution

1. Step 1: Write the proportion equation
   65,784 : 98,680.89 = 21,407.34 : x
2. Step 2: Convert to fraction form
   65,784/98,680.89 = 21,407.34/x
3. Step 3: Cross multiply
   65,784x = 98,680.89 × 21,407.34
4. Step 4: Simplify right side
   65,784x = 2,112,495,363.73
5. Step 5: Solve for x
   x = 2,112,495,363.73/65,784
6. Step 6: Final answer
   x = 32,112.60