Finding the Fourth Proportional to 42,881.11, 64,380.59 and 21,835.29

Step by Step Solution

1. Step 1: Write the proportion equation
   42,881.11 : 64,380.59 = 21,835.29 : x
2. Step 2: Convert to fraction form
   42,881.11/64,380.59 = 21,835.29/x
3. Step 3: Cross multiply
   42,881.11x = 64,380.59 × 21,835.29
4. Step 4: Simplify right side
   42,881.11x = 1,405,768,705.01
5. Step 5: Solve for x
   x = 1,405,768,705.01/42,881.11
6. Step 6: Final answer
   x = 32,782.93