Finding the Fourth Proportional to 62.50, 93.72 and 42.28

Step by Step Solution

1. Step 1: Write the proportion equation
   62.50 : 93.72 = 42.28 : x
2. Step 2: Convert to fraction form
   62.50/93.72 = 42.28/x
3. Step 3: Cross multiply
   62.50x = 93.72 × 42.28
4. Step 4: Simplify right side
   62.50x = 3,962.48
5. Step 5: Solve for x
   x = 3,962.48/62.50
6. Step 6: Final answer
   x = 63.40