Finding the Fourth Proportional to 83,612.91, 115,385.81 and 50,078.91

Step by Step Solution

1. Step 1: Write the proportion equation
   83,612.91 : 115,385.81 = 50,078.91 : x
2. Step 2: Convert to fraction form
   83,612.91/115,385.81 = 50,078.91/x
3. Step 3: Cross multiply
   83,612.91x = 115,385.81 × 50,078.91
4. Step 4: Simplify right side
   83,612.91x = 5,778,395,286.77
5. Step 5: Solve for x
   x = 5,778,395,286.77/83,612.91
6. Step 6: Final answer
   x = 69,108.89