Finding the Fourth Proportional to 100,801.52, 139,103.53 and 54,859.22

Step by Step Solution

1. Step 1: Write the proportion equation
   100,801.52 : 139,103.53 = 54,859.22 : x
2. Step 2: Convert to fraction form
   100,801.52/139,103.53 = 54,859.22/x
3. Step 3: Cross multiply
   100,801.52x = 139,103.53 × 54,859.22
4. Step 4: Simplify right side
   100,801.52x = 7,631,111,155.05
5. Step 5: Solve for x
   x = 7,631,111,155.05/100,801.52
6. Step 6: Final answer
   x = 75,704.33