Finding the Fourth Proportional to 43,007.51, 64,518.83 and 19,636.31

Step by Step Solution

1. Step 1: Write the proportion equation
   43,007.51 : 64,518.83 = 19,636.31 : x
2. Step 2: Convert to fraction form
   43,007.51/64,518.83 = 19,636.31/x
3. Step 3: Cross multiply
   43,007.51x = 64,518.83 × 19,636.31
4. Step 4: Simplify right side
   43,007.51x = 1,266,911,746.72
5. Step 5: Solve for x
   x = 1,266,911,746.72/43,007.51
6. Step 6: Final answer
   x = 29,457.92