Finding the Fourth Proportional to 133,408.20, 184,103.25 and 72,978.83

Step by Step Solution

1. Step 1: Write the proportion equation
   133,408.20 : 184,103.25 = 72,978.83 : x
2. Step 2: Convert to fraction form
   133,408.20/184,103.25 = 72,978.83/x
3. Step 3: Cross multiply
   133,408.20x = 184,103.25 × 72,978.83
4. Step 4: Simplify right side
   133,408.20x = 13,435,639,784.20
5. Step 5: Solve for x
   x = 13,435,639,784.20/133,408.20
6. Step 6: Final answer
   x = 100,710.75