Finding the Fourth Proportional to 83,515.79, 115,256.50 and 49,544.39

Step by Step Solution

1. Step 1: Write the proportion equation
   83,515.79 : 115,256.50 = 49,544.39 : x
2. Step 2: Convert to fraction form
   83,515.79/115,256.50 = 49,544.39/x
3. Step 3: Cross multiply
   83,515.79x = 115,256.50 × 49,544.39
4. Step 4: Simplify right side
   83,515.79x = 5,710,312,285.89
5. Step 5: Solve for x
   x = 5,710,312,285.89/83,515.79
6. Step 6: Final answer
   x = 68,374.05