Finding the Fourth Proportional to 73.00, 100.64 and 53.31

Step by Step Solution

1. Step 1: Write the proportion equation
   73.00 : 100.64 = 53.31 : x
2. Step 2: Convert to fraction form
   73.00/100.64 = 53.31/x
3. Step 3: Cross multiply
   73.00x = 100.64 × 53.31
4. Step 4: Simplify right side
   73.00x = 5,365.25
5. Step 5: Solve for x
   x = 5,365.25/73.00
6. Step 6: Final answer
   x = 73.50