Finding the Fourth Proportional to 83,678.86, 115,471.33 and 49,685.59

Step by Step Solution

1. Step 1: Write the proportion equation
   83,678.86 : 115,471.33 = 49,685.59 : x
2. Step 2: Convert to fraction form
   83,678.86/115,471.33 = 49,685.59/x
3. Step 3: Cross multiply
   83,678.86x = 115,471.33 × 49,685.59
4. Step 4: Simplify right side
   83,678.86x = 5,737,261,159.13
5. Step 5: Solve for x
   x = 5,737,261,159.13/83,678.86
6. Step 6: Final answer
   x = 68,562.85