Finding the Fourth Proportional to 91,357.61, 137,034.89 and 27,315.90

Step by Step Solution

1. Step 1: Write the proportion equation
   91,357.61 : 137,034.89 = 27,315.90 : x
2. Step 2: Convert to fraction form
   91,357.61/137,034.89 = 27,315.90/x
3. Step 3: Cross multiply
   91,357.61x = 137,034.89 × 27,315.90
4. Step 4: Simplify right side
   91,357.61x = 3,743,231,215.17
5. Step 5: Solve for x
   x = 3,743,231,215.17/91,357.61
6. Step 6: Final answer
   x = 40,973.39