Finding the Fourth Proportional to 42,005.40, 60,480 and 42,005.40

Step by Step Solution

1. Step 1: Write the proportion equation
   42,005.40 : 60,480 = 42,005.40 : x
2. Step 2: Convert to fraction form
   42,005.40/60,480 = 42,005.40/x
3. Step 3: Cross multiply
   42,005.40x = 60,480 × 42,005.40
4. Step 4: Simplify right side
   42,005.40x = 2,540,486,592
5. Step 5: Solve for x
   x = 2,540,486,592/42,005.40
6. Step 6: Final answer
   x = 60,480