Finding the Fourth Proportional to 45,907.30, 68,715.15 and 42,408.10

Step by Step Solution

1. Step 1: Write the proportion equation
   45,907.30 : 68,715.15 = 42,408.10 : x
2. Step 2: Convert to fraction form
   45,907.30/68,715.15 = 42,408.10/x
3. Step 3: Cross multiply
   45,907.30x = 68,715.15 × 42,408.10
4. Step 4: Simplify right side
   45,907.30x = 2,914,078,952.72
5. Step 5: Solve for x
   x = 2,914,078,952.72/45,907.30
6. Step 6: Final answer
   x = 63,477.46