Finding the Fourth Proportional to 136,849.72, 205,274.52 and 99,646.52

Step by Step Solution

1. Step 1: Write the proportion equation
   136,849.72 : 205,274.52 = 99,646.52 : x
2. Step 2: Convert to fraction form
   136,849.72/205,274.52 = 99,646.52/x
3. Step 3: Cross multiply
   136,849.72x = 205,274.52 × 99,646.52
4. Step 4: Simplify right side
   136,849.72x = 20,454,891,562.67
5. Step 5: Solve for x
   x = 20,454,891,562.67/136,849.72
6. Step 6: Final answer
   x = 149,469.74