Finding the Fourth Proportional to 43,008.51, 64,520.33 and 19,637.31

Step by Step Solution

1. Step 1: Write the proportion equation
   43,008.51 : 64,520.33 = 19,637.31 : x
2. Step 2: Convert to fraction form
   43,008.51/64,520.33 = 19,637.31/x
3. Step 3: Cross multiply
   43,008.51x = 64,520.33 × 19,637.31
4. Step 4: Simplify right side
   43,008.51x = 1,267,005,721.51
5. Step 5: Solve for x
   x = 1,267,005,721.51/43,008.51
6. Step 6: Final answer
   x = 29,459.42