Finding the Fourth Proportional to 69,870.38, 96,421.52 and 38,039.20

Step by Step Solution

1. Step 1: Write the proportion equation
   69,870.38 : 96,421.52 = 38,039.20 : x
2. Step 2: Convert to fraction form
   69,870.38/96,421.52 = 38,039.20/x
3. Step 3: Cross multiply
   69,870.38x = 96,421.52 × 38,039.20
4. Step 4: Simplify right side
   69,870.38x = 3,667,797,483.58
5. Step 5: Solve for x
   x = 3,667,797,483.58/69,870.38
6. Step 6: Final answer
   x = 52,494.31