Finding the Fourth Proportional to 43,002.51, 64,511.33 and 19,631.31

Step by Step Solution

1. Step 1: Write the proportion equation
   43,002.51 : 64,511.33 = 19,631.31 : x
2. Step 2: Convert to fraction form
   43,002.51/64,511.33 = 19,631.31/x
3. Step 3: Cross multiply
   43,002.51x = 64,511.33 × 19,631.31
4. Step 4: Simplify right side
   43,002.51x = 1,266,441,819.59
5. Step 5: Solve for x
   x = 1,266,441,819.59/43,002.51
6. Step 6: Final answer
   x = 29,450.42