Finding the Fourth Proportional to 61.30, 91.68 and 42.01

Step by Step Solution

1. Step 1: Write the proportion equation
   61.30 : 91.68 = 42.01 : x
2. Step 2: Convert to fraction form
   61.30/91.68 = 42.01/x
3. Step 3: Cross multiply
   61.30x = 91.68 × 42.01
4. Step 4: Simplify right side
   61.30x = 3,851.48
5. Step 5: Solve for x
   x = 3,851.48/61.30
6. Step 6: Final answer
   x = 62.83