Finding the Fourth Proportional to 91,997.82, 138,050.28 and 38,685.94

Step by Step Solution

1. Step 1: Write the proportion equation
   91,997.82 : 138,050.28 = 38,685.94 : x
2. Step 2: Convert to fraction form
   91,997.82/138,050.28 = 38,685.94/x
3. Step 3: Cross multiply
   91,997.82x = 138,050.28 × 38,685.94
4. Step 4: Simplify right side
   91,997.82x = 5,340,604,849.06
5. Step 5: Solve for x
   x = 5,340,604,849.06/91,997.82
6. Step 6: Final answer
   x = 58,051.43