Finding the Fourth Proportional to 136,423.10, 204,633.20 and 53,316.38

Step by Step Solution

1. Step 1: Write the proportion equation
   136,423.10 : 204,633.20 = 53,316.38 : x
2. Step 2: Convert to fraction form
   136,423.10/204,633.20 = 53,316.38/x
3. Step 3: Cross multiply
   136,423.10x = 204,633.20 × 53,316.38
4. Step 4: Simplify right side
   136,423.10x = 10,910,300,561.94
5. Step 5: Solve for x
   x = 10,910,300,561.94/136,423.10
6. Step 6: Final answer
   x = 79,974.00