Finding the Fourth Proportional to 42,419.40, 59,309.40 and 42,419.40

Step by Step Solution

1. Step 1: Write the proportion equation
   42,419.40 : 59,309.40 = 42,419.40 : x
2. Step 2: Convert to fraction form
   42,419.40/59,309.40 = 42,419.40/x
3. Step 3: Cross multiply
   42,419.40x = 59,309.40 × 42,419.40
4. Step 4: Simplify right side
   42,419.40x = 2,515,869,162.36
5. Step 5: Solve for x
   x = 2,515,869,162.36/42,419.40
6. Step 6: Final answer
   x = 59,309.40