Finding the Fourth Proportional to 53,091.32, 73,266.72 and 30,431.36

Step by Step Solution

1. Step 1: Write the proportion equation
   53,091.32 : 73,266.72 = 30,431.36 : x
2. Step 2: Convert to fraction form
   53,091.32/73,266.72 = 30,431.36/x
3. Step 3: Cross multiply
   53,091.32x = 73,266.72 × 30,431.36
4. Step 4: Simplify right side
   53,091.32x = 2,229,605,932.34
5. Step 5: Solve for x
   x = 2,229,605,932.34/53,091.32
6. Step 6: Final answer
   x = 41,995.68