Finding the Fourth Proportional to 438,742.01, 658,153.18 and 123,196.79

Step by Step Solution

1. Step 1: Write the proportion equation
   438,742.01 : 658,153.18 = 123,196.79 : x
2. Step 2: Convert to fraction form
   438,742.01/658,153.18 = 123,196.79/x
3. Step 3: Cross multiply
   438,742.01x = 658,153.18 × 123,196.79
4. Step 4: Simplify right side
   438,742.01x = 81,082,359,104.29
5. Step 5: Solve for x
   x = 81,082,359,104.29/438,742.01
6. Step 6: Final answer
   x = 184,806.46