Finding the Fourth Proportional to 91,208.18, 136,812.72 and 41,229.77

Step by Step Solution

1. Step 1: Write the proportion equation
   91,208.18 : 136,812.72 = 41,229.77 : x
2. Step 2: Convert to fraction form
   91,208.18/136,812.72 = 41,229.77/x
3. Step 3: Cross multiply
   91,208.18x = 136,812.72 × 41,229.77
4. Step 4: Simplify right side
   91,208.18x = 5,640,756,294.61
5. Step 5: Solve for x
   x = 5,640,756,294.61/91,208.18
6. Step 6: Final answer
   x = 61,844.85