Finding the Fourth Proportional to 91,813.50, 137,778.51 and 39,223.38

Step by Step Solution

1. Step 1: Write the proportion equation
   91,813.50 : 137,778.51 = 39,223.38 : x
2. Step 2: Convert to fraction form
   91,813.50/137,778.51 = 39,223.38/x
3. Step 3: Cross multiply
   91,813.50x = 137,778.51 × 39,223.38
4. Step 4: Simplify right side
   91,813.50x = 5,404,138,853.56
5. Step 5: Solve for x
   x = 5,404,138,853.56/91,813.50
6. Step 6: Final answer
   x = 58,859.96