Finding the Fourth Proportional to 42,672.18, 63,847.89 and 40,422

Step by Step Solution

1. Step 1: Write the proportion equation
   42,672.18 : 63,847.89 = 40,422 : x
2. Step 2: Convert to fraction form
   42,672.18/63,847.89 = 40,422/x
3. Step 3: Cross multiply
   42,672.18x = 63,847.89 × 40,422
4. Step 4: Simplify right side
   42,672.18x = 2,580,859,409.58
5. Step 5: Solve for x
   x = 2,580,859,409.58/42,672.18
6. Step 6: Final answer
   x = 60,481.08