Finding the Fourth Proportional to 91,339.30, 137,028.12 and 38,747.62

Step by Step Solution

1. Step 1: Write the proportion equation
   91,339.30 : 137,028.12 = 38,747.62 : x
2. Step 2: Convert to fraction form
   91,339.30/137,028.12 = 38,747.62/x
3. Step 3: Cross multiply
   91,339.30x = 137,028.12 × 38,747.62
4. Step 4: Simplify right side
   91,339.30x = 5,309,513,523.07
5. Step 5: Solve for x
   x = 5,309,513,523.07/91,339.30
6. Step 6: Final answer
   x = 58,129.56