Finding the Fourth Proportional to 101,518.52, 140,093.35 and 55,578.05

Step by Step Solution

1. Step 1: Write the proportion equation
   101,518.52 : 140,093.35 = 55,578.05 : x
2. Step 2: Convert to fraction form
   101,518.52/140,093.35 = 55,578.05/x
3. Step 3: Cross multiply
   101,518.52x = 140,093.35 × 55,578.05
4. Step 4: Simplify right side
   101,518.52x = 7,786,114,896.91
5. Step 5: Solve for x
   x = 7,786,114,896.91/101,518.52
6. Step 6: Final answer
   x = 76,696.50