Finding the Fourth Proportional to 102,139.29, 153,103.28 and 38,942.42

Step by Step Solution

1. Step 1: Write the proportion equation
   102,139.29 : 153,103.28 = 38,942.42 : x
2. Step 2: Convert to fraction form
   102,139.29/153,103.28 = 38,942.42/x
3. Step 3: Cross multiply
   102,139.29x = 153,103.28 × 38,942.42
4. Step 4: Simplify right side
   102,139.29x = 5,962,211,272.91
5. Step 5: Solve for x
   x = 5,962,211,272.91/102,139.29
6. Step 6: Final answer
   x = 58,373.34