Finding the Fourth Proportional to 42,862.98, 64,353.54 and 21,817.26

Step by Step Solution

1. Step 1: Write the proportion equation
   42,862.98 : 64,353.54 = 21,817.26 : x
2. Step 2: Convert to fraction form
   42,862.98/64,353.54 = 21,817.26/x
3. Step 3: Cross multiply
   42,862.98x = 64,353.54 × 21,817.26
4. Step 4: Simplify right side
   42,862.98x = 1,404,017,914.10
5. Step 5: Solve for x
   x = 1,404,017,914.10/42,862.98
6. Step 6: Final answer
   x = 32,755.96