Finding the Fourth Proportional to 43,670.88, 65,499.94 and 21,478.30

Step by Step Solution

1. Step 1: Write the proportion equation
   43,670.88 : 65,499.94 = 21,478.30 : x
2. Step 2: Convert to fraction form
   43,670.88/65,499.94 = 21,478.30/x
3. Step 3: Cross multiply
   43,670.88x = 65,499.94 × 21,478.30
4. Step 4: Simplify right side
   43,670.88x = 1,406,827,361.30
5. Step 5: Solve for x
   x = 1,406,827,361.30/43,670.88
6. Step 6: Final answer
   x = 32,214.31