Finding the Fourth Proportional to 81,390.83, 112,320.83 and 49,125.50

Step by Step Solution

1. Step 1: Write the proportion equation
   81,390.83 : 112,320.83 = 49,125.50 : x
2. Step 2: Convert to fraction form
   81,390.83/112,320.83 = 49,125.50/x
3. Step 3: Cross multiply
   81,390.83x = 112,320.83 × 49,125.50
4. Step 4: Simplify right side
   81,390.83x = 5,517,816,495.37
5. Step 5: Solve for x
   x = 5,517,816,495.37/81,390.83
6. Step 6: Final answer
   x = 67,794.08