Finding the Fourth Proportional to 103,607.91, 155,077.61 and 53,619.30

Step by Step Solution

1. Step 1: Write the proportion equation
   103,607.91 : 155,077.61 = 53,619.30 : x
2. Step 2: Convert to fraction form
   103,607.91/155,077.61 = 53,619.30/x
3. Step 3: Cross multiply
   103,607.91x = 155,077.61 × 53,619.30
4. Step 4: Simplify right side
   103,607.91x = 8,315,152,625.78
5. Step 5: Solve for x
   x = 8,315,152,625.78/103,607.91
6. Step 6: Final answer
   x = 80,255.96