Finding the Fourth Proportional to 64,084.17, 96,128.90 and 21,993.18

Step by Step Solution

1. Step 1: Write the proportion equation
   64,084.17 : 96,128.90 = 21,993.18 : x
2. Step 2: Convert to fraction form
   64,084.17/96,128.90 = 21,993.18/x
3. Step 3: Cross multiply
   64,084.17x = 96,128.90 × 21,993.18
4. Step 4: Simplify right side
   64,084.17x = 2,114,180,200.90
5. Step 5: Solve for x
   x = 2,114,180,200.90/64,084.17
6. Step 6: Final answer
   x = 32,990.68