Finding the Fourth Proportional to 133,409.47, 184,105 and 72,980.09

Step by Step Solution

1. Step 1: Write the proportion equation
   133,409.47 : 184,105 = 72,980.09 : x
2. Step 2: Convert to fraction form
   133,409.47/184,105 = 72,980.09/x
3. Step 3: Cross multiply
   133,409.47x = 184,105 × 72,980.09
4. Step 4: Simplify right side
   133,409.47x = 13,435,999,469.45
5. Step 5: Solve for x
   x = 13,435,999,469.45/133,409.47
6. Step 6: Final answer
   x = 100,712.49