Finding the Fourth Proportional to 73,679.46, 110,440.50 and 42,021.36

Step by Step Solution

1. Step 1: Write the proportion equation
   73,679.46 : 110,440.50 = 42,021.36 : x
2. Step 2: Convert to fraction form
   73,679.46/110,440.50 = 42,021.36/x
3. Step 3: Cross multiply
   73,679.46x = 110,440.50 × 42,021.36
4. Step 4: Simplify right side
   73,679.46x = 4,640,860,417.04
5. Step 5: Solve for x
   x = 4,640,860,417.04/73,679.46
6. Step 6: Final answer
   x = 62,987.17