Finding the Fourth Proportional to 103,404.02, 155,152.11 and 54,144.50

Step by Step Solution

1. Step 1: Write the proportion equation
   103,404.02 : 155,152.11 = 54,144.50 : x
2. Step 2: Convert to fraction form
   103,404.02/155,152.11 = 54,144.50/x
3. Step 3: Cross multiply
   103,404.02x = 155,152.11 × 54,144.50
4. Step 4: Simplify right side
   103,404.02x = 8,400,633,419.90
5. Step 5: Solve for x
   x = 8,400,633,419.90/103,404.02
6. Step 6: Final answer
   x = 81,240.88