Finding the Fourth Proportional to 53.00, 73.15 and 42.12

Step by Step Solution

1. Step 1: Write the proportion equation
   53.00 : 73.15 = 42.12 : x
2. Step 2: Convert to fraction form
   53.00/73.15 = 42.12/x
3. Step 3: Cross multiply
   53.00x = 73.15 × 42.12
4. Step 4: Simplify right side
   53.00x = 3,081.21
5. Step 5: Solve for x
   x = 3,081.21/53.00
6. Step 6: Final answer
   x = 58.13