Finding the Fourth Proportional to 65,721.30, 90,704.80 and 37,429.62

Step by Step Solution

1. Step 1: Write the proportion equation
   65,721.30 : 90,704.80 = 37,429.62 : x
2. Step 2: Convert to fraction form
   65,721.30/90,704.80 = 37,429.62/x
3. Step 3: Cross multiply
   65,721.30x = 90,704.80 × 37,429.62
4. Step 4: Simplify right side
   65,721.30x = 3,395,046,196.18
5. Step 5: Solve for x
   x = 3,395,046,196.18/65,721.30
6. Step 6: Final answer
   x = 51,658.23