Finding the Fourth Proportional to 42,642.90, 59,622.30 and 42,642.90

Step by Step Solution

1. Step 1: Write the proportion equation
   42,642.90 : 59,622.30 = 42,642.90 : x
2. Step 2: Convert to fraction form
   42,642.90/59,622.30 = 42,642.90/x
3. Step 3: Cross multiply
   42,642.90x = 59,622.30 × 42,642.90
4. Step 4: Simplify right side
   42,642.90x = 2,542,467,776.67
5. Step 5: Solve for x
   x = 2,542,467,776.67/42,642.90
6. Step 6: Final answer
   x = 59,622.30