Finding the Fourth Proportional to 42,000.60, 58,878.60 and 42,000.60

Step by Step Solution

1. Step 1: Write the proportion equation
   42,000.60 : 58,878.60 = 42,000.60 : x
2. Step 2: Convert to fraction form
   42,000.60/58,878.60 = 42,000.60/x
3. Step 3: Cross multiply
   42,000.60x = 58,878.60 × 42,000.60
4. Step 4: Simplify right side
   42,000.60x = 2,472,936,527.16
5. Step 5: Solve for x
   x = 2,472,936,527.16/42,000.60
6. Step 6: Final answer
   x = 58,878.60