Finding the Fourth Proportional to 173,340, 260,010 and 42,012

Step by Step Solution

1. Step 1: Write the proportion equation
   173,340 : 260,010 = 42,012 : x
2. Step 2: Convert to fraction form
   173,340/260,010 = 42,012/x
3. Step 3: Cross multiply
   173,340x = 260,010 × 42,012
4. Step 4: Simplify right side
   173,340x = 10,923,540,120
5. Step 5: Solve for x
   x = 10,923,540,120/173,340
6. Step 6: Final answer
   x = 63,018