Finding the Fourth Proportional to 100,851.93, 139,174.55 and 55,528.75

Step by Step Solution

1. Step 1: Write the proportion equation
   100,851.93 : 139,174.55 = 55,528.75 : x
2. Step 2: Convert to fraction form
   100,851.93/139,174.55 = 55,528.75/x
3. Step 3: Cross multiply
   100,851.93x = 139,174.55 × 55,528.75
4. Step 4: Simplify right side
   100,851.93x = 7,728,188,793.31
5. Step 5: Solve for x
   x = 7,728,188,793.31/100,851.93
6. Step 6: Final answer
   x = 76,629.06