Finding the Fourth Proportional to 42.50, 63.58 and 28.98

Step by Step Solution

1. Step 1: Write the proportion equation
   42.50 : 63.58 = 28.98 : x
2. Step 2: Convert to fraction form
   42.50/63.58 = 28.98/x
3. Step 3: Cross multiply
   42.50x = 63.58 × 28.98
4. Step 4: Simplify right side
   42.50x = 1,842.55
5. Step 5: Solve for x
   x = 1,842.55/42.50
6. Step 6: Final answer
   x = 43.36