Finding the Fourth Proportional to 42,017.80, 58,928.60 and 42,017.80

Step by Step Solution

1. Step 1: Write the proportion equation
   42,017.80 : 58,928.60 = 42,017.80 : x
2. Step 2: Convert to fraction form
   42,017.80/58,928.60 = 42,017.80/x
3. Step 3: Cross multiply
   42,017.80x = 58,928.60 × 42,017.80
4. Step 4: Simplify right side
   42,017.80x = 2,476,050,129.08
5. Step 5: Solve for x
   x = 2,476,050,129.08/42,017.80
6. Step 6: Final answer
   x = 58,928.60