Finding the Fourth Proportional to 67,721.10, 93,460.95 and 39,429.42

Step by Step Solution

1. Step 1: Write the proportion equation
   67,721.10 : 93,460.95 = 39,429.42 : x
2. Step 2: Convert to fraction form
   67,721.10/93,460.95 = 39,429.42/x
3. Step 3: Cross multiply
   67,721.10x = 93,460.95 × 39,429.42
4. Step 4: Simplify right side
   67,721.10x = 3,685,111,051.15
5. Step 5: Solve for x
   x = 3,685,111,051.15/67,721.10
6. Step 6: Final answer
   x = 54,416.00