Finding the Fourth Proportional to 42,749.50, 64,124.12 and 30,046.96

Step by Step Solution

1. Step 1: Write the proportion equation
   42,749.50 : 64,124.12 = 30,046.96 : x
2. Step 2: Convert to fraction form
   42,749.50/64,124.12 = 30,046.96/x
3. Step 3: Cross multiply
   42,749.50x = 64,124.12 × 30,046.96
4. Step 4: Simplify right side
   42,749.50x = 1,926,735,104.10
5. Step 5: Solve for x
   x = 1,926,735,104.10/42,749.50
6. Step 6: Final answer
   x = 45,070.35