Finding the Fourth Proportional to 42,145.74, 63,240.48 and 30,554.64

Step by Step Solution

1. Step 1: Write the proportion equation
   42,145.74 : 63,240.48 = 30,554.64 : x
2. Step 2: Convert to fraction form
   42,145.74/63,240.48 = 30,554.64/x
3. Step 3: Cross multiply
   42,145.74x = 63,240.48 × 30,554.64
4. Step 4: Simplify right side
   42,145.74x = 1,932,290,099.83
5. Step 5: Solve for x
   x = 1,932,290,099.83/42,145.74
6. Step 6: Final answer
   x = 45,847.82