Finding the Fourth Proportional to 68,729.30, 103,133.58 and 37,139.42

Step by Step Solution

1. Step 1: Write the proportion equation
   68,729.30 : 103,133.58 = 37,139.42 : x
2. Step 2: Convert to fraction form
   68,729.30/103,133.58 = 37,139.42/x
3. Step 3: Cross multiply
   68,729.30x = 103,133.58 × 37,139.42
4. Step 4: Simplify right side
   68,729.30x = 3,830,321,343.72
5. Step 5: Solve for x
   x = 3,830,321,343.72/68,729.30
6. Step 6: Final answer
   x = 55,730.54